This is why I love science. Science is progressive learning and I can see my future children in their science class looking back at fluid dynamics when it comes to this discovery thanks to you.
You guys are literally making history. Do you understand that there’s a whole new scientific community behind you guys? Brace your gray hairs Derek! Congratulations.
One moment in my life I was eating spaghetti and I slurped a single noodle as fast as I could and I got whipped in the face by the end of the noodle. Thanks to this data I understand now why the spaghetti noodle acted as a bull whip.
This is why I love the internet. You can take something as unbelievably complicated as a supersonic physics and make a compelling video simple enough for a common person to understand. Not only that, but you're showing things that are likely the world's first observations, and sharing them with the entire world
The world is complicated enough at different time speeds and scales. It is all there, he is the Wizard that makes us see what really happens in our quotidian world. He gives a good name to his University. This is the BEST WAY to promote education. Everybody will drop 50,000 dollars on a physics or engineering education without any hesitation.
It's the distribution of interesting observations that is the difference. When I needed to understand supersonic (flight) I had to go to the University Library. Now I sit at home with coffee and toast and hit search and CLICK!
The problem is all the interference and distractions on the Web and it's hard to find channels like this without accidentally looking at bikini try-ons
OMG! 40 years ago a girlfriend convinced me to join her in an evening class where we made our own braided leather bullwhips from scratch. We started with tanned hides, sliced them, shaved them, dressed the strips to precise tapers, oiled then braided them. It took a team of two about 20 hours to make both whips. Then we got to learn various techniques, from gently capturing things (we learned to wrap our whip around a balloon without popping it), to wrapping hard enough to break things (my favorite was sidewalk chalk, which exploded). But the best part was learning to crack our whips. We started by simply rolling the loop of the whip down onto the floor, where it would snap when the tip smacked down. Then we gradually added more energy, a truly small amount at a time, until it started to crack in the air. Large, graceful motions that finished with a crack. Then we learned quicker moves that brought the snap a little closer in, where we learned to place it where we wanted it. I envied the folks who were ambidextrous with their whips, because my right arm was getting ready to fall off. We wanted to see if we could capture the motion of the whip by cracking it horizontally over sand, so a few of us took our whips to the beach and tried to crack the whip horizontally within an inch of the sand. Almost impossible to do, but once in a while we did notice a puff of sand happening well before the whip had reached full extension, from a part of the whip not in contact with the sand. If only... Fast forward 25 years, and I was on the team making a camera that could take 100,000 frames per second (the Redlake HG-100K). When the third alpha unit became the first to work at full speed, we searched for targets that would both test the camera and thrill Marketing. Popping a balloon wasn't nearly fast enough. I thought back to my days with the bullwhip, and we immediately went out and bought a few. Despite dumping a zillion lumens into the field of view, nothing useful came of it. (Clearly, using Schlieren photography and capturing the shockwave is crucial.) What we did wind up doing was pointing the camera at the HID bulb in an Epson video projector (torn from the ceiling of a conference room), where we captured the most amazing video of the arc wandering between the electrodes within the bulb envelope. We put a GIF of the sequence up on our website (this was before TH-cam), which caused some small level of buzz online. The next morning we received phone calls from the Japanese executives of both Epson and Panasonic (the maker of the bulb). It turns out that arc wander was the primary factor limiting projector sharpness, so stabilizing the position of the arc was crucial to gaining any benefit from using higher-resolution LCDs. Two days later they were in our offices for a demo, and left an awesome pile of money behind when they departed with our very first beta unit. Their problem was that high-speed film limited the rate of innovation to one test run per day, with the film developed overnight: Our camera allowed them to do a dozen runs every day, leaping their R&D further ahead of the competition. You may have noticed I mentioned we had to go out and buy some bullwhips. My treasured handmade bullwhip had disintegrated within a year of making it: Evidently, the tanning process used on the leather wasn't compatible with the oil we applied to it. It sure was fun while it lasted. Now you two have got me wanting to make another one!
@@AprilJenniferChoi This is April everyone. Thanks again for coming to to Bama and for all the help! Let's get this analysis done and publish together!
@@AprilJenniferChoi Thank you for helping us get Smarter Every Day! This is a fascinating and profound insight. I'm excited to see what you and Destin will publish from this.
I second that! It's indeed the most interesting one for me, not only here but on TH-cam as well, it's my first time ever to make a comment on a TH-cam video.
thunderf00t had also quite surprising paper grow out of a youtube project - he had also include aknowledgement of help of his patreon supporters into it.
Honestly, I'm still just impressed that people figured out how to make the whip do that hundreds if not thousands of years ago. And only NOW do we understand exactly why it does that. So cool.
In another field, we still dont know at all how molecules like aspirin or paracetamol "work"... It's the case for boatloads of older pharmaceutical products. Nowadays the mechanisms need to be understood before the drug is even admissible to trial...
This is the type of youtube channel that deserves ad revenue and sponsors because they put work in their videos, real work. Videos that are compilations of other videos do not deserve revenue
names zeus actually wrong compilations lead people here and one of those compilations might lead the next innovator or inventor right here and onto changing the world
In case anyone wonders about the strange costume in the german paper at 4:11 😂 ...this is traditional carneval in southern germany, to be exact in the Region around the Black Forest. One key element in this tradition, besides the costumes, is the whip cracking to scare the winter ghosts away. Greetings from the Black Forest, Germany😉
This video was absolutely fascinating, and I feel privileged to witness this development in human understanding. Had a moment in the video where I said, “wow, that’s a lot of doctors!”
The guy in the wierd suit is part of a celebration in Southern Germany. It is called 'Alemannische Fasnet'. In this tradition, people gather every spring around February for parades. The people in the parades usually wear historical costumes. Part of this custom is to make a lot of noise with bells, ratchets and sometimes also with whips.
probably not though, he didn't do a lot of the "legwork" that good quality video production requires, he would obscure and probably have next to no subscribers
Einsteins papers were too hard for even the greatest scientists of his day so I really doubt he would make videos when nobody would be able to follow his reasoning. When a journalist asked the British astronomer Sir Arthur Eddington if it was true that he was one of only three people in the world who could understand Einstein’s relativity theories, Eddington considered deeply for a moment and replied: “I am trying to think who the third person is.” - B. Bryson Today the theory of relativity has been watered down so more people can understand it but if you go deeper to the more advanced stuff you will realise that its extremely unintuitive and very few people would actually comprehend it completely. There are websites like research gate which are suited for scientific papers. Einstein would be wasting his time on youtube. This video right here is baby physics compared to what Einstein did.
Hang on I just realized something.... the whip in slo mo looks exactly like the dancing inflatable guys outside of car dealerships.. SOOO if the inflatable moved fast enough... oh god SUPERSONIC INFLATABLE MEN
I hypothesise that the knot that helps to start the force of the air breaking, leading the waves, is just enough mass change in a quick transition towards the end of that whip that is the ultimate catalyst, seeing as how the wave suddenly goes from very little mass to a sizable addition of mass, and the frayed ends are trying to catch up to the equilibriam of pressure exerted by the wave as the sound barrier is broken. Great work on this, my science bug is wanting more. Subbed for awesome whip cracking science!
3:40 Oh wow, you can actually see the shock wave initiate. You're literally seeing it as it goes from subsonic, to transonic to supersonic, right? That's incredible
!!!! What the heeeckkk!!!! I thought this was going to be an easy answer! Then the video kept getting deeper and deeper as the mystery kept on raveling and unraveling and I got more and more confused as I realized that I know less and less and I've never been more excited to know that I know nothing! I had NO idea that a whip could be such an incredibly beautiful and complicated piece of artistry. Think about that! We have jetpacks and lasers and cars in space and still do not understand how whips work. This is so exciting and cool to me that I can't even explain it.
That is the exact process any scientist/engineer goes through when researching *anything*. When you come out with more questions than when you came in, you're doing science right.
That was awesome! A little channel called Peninsula Seniors has a bunch of lectures from quite a few SR-71 pilots with their personal stories of flying the plane. Really good stuff for Blackbird fans.
You guys should use the schlieren method for your you build it we shoot it series it could Help with spotting why some rounds are more aerodynamic than others
My 5 year old daughter loved this video. She wanted yo see what the tiny explosion looked like that i had mentioned when she tried hitting me with a t shirt. Didnt realize this isnt a phenomenon that was often filmed. Thank you. Truly.
@@howinthewhat anyone that researches and publishes papers is the definition of a scientist. We learnt this in the first year of my science degree. Just because you may have the science degree, doesnt mean you are a scientist
I got to experience this phenomenon firsthand when I picked my wife up for our first date. She was still drying her hair with a towel and she thought it would be cute to throw the towel at me. So I thought it would be cute to pretend that I was going to “whip” it at her. With a lazy motion I whipped the towel towards her but unfortunately that towel conserved energy perfectly. The crack was so loud that I am pretty sure it broke the sound barrier and left A bruise on her bottom even through her jeans. And with all that we were still married a few years later and have been for over 18 years. 😄
Growing up, my brothers and I routinely had battles in the kitchen with cotton tea towels (no idea what you'd call them in the States, we used them for drying dishes). The ones with a fringe on the end cracked better, though the cotton weave disintegrated fairly quickly with repeated abuse. You really didn't want to cop a loud one on bare skin, it would raise quite a welt! Great for taking down flies, though... :-D
I liked this video, at 8 mins 25 seconds when I realized how the whip looks like it holding the shock wave like it was a ball , and the Shockwave got bigger the further it traveled the whip. And it wasn't until the tip of the whip started coming out of loop at the end . The force behind the whip loop grew stronger and then there wasn't enough whip material left at the beginning of the shock wave to hold back that collection of energy from the speed f the whip. I looked at the Shockwave as it's water and you could cast out a tarp into water . And pulling in the tarp is the same has the whip being extended, so as the whipped travel in the air it collected energy in the from of are atmosphere atoms of oxygen an nitrogen. But the whip velocity and it material is able to pick up enough atmosphere particles at the beginning of the Shockwave released all those atmospheric particle and a high speed which is what creates the Shockwave it's self , cause you need sometype of substance there to be big enough and fast enough to break the atoms in the atmosphere apart.
Wow, a perfect video, even the plug for Audible was informative and captivating. Love your work, and the fact you seem to enjoy it so much. Keep it up.
As a whip maker and instructor, this is the coolest video you could have put out! Thank you! One thing we've noticed is that different popper materials and fluff length actually change the tone of the sound - to be sharper or duller. It would be amazing if you were able to explain that using this new model!
It looked like the shockwave from the knotted tip was much less powerful than the fluff. It still goes supersonic without the fluff, but it's not as loud.
There were a lot of things we couldn't do in an SR-71, but we were the fastest guys on the block and loved reminding our fellow aviators of this fact. People often asked us if, because of this fact, it was fun to fly the jet. Fun would not be the first word I would use to describe flying this plane. Intense, maybe. Even cerebral. But there was one day in our Sled experience when we would have to say that it was pure fun to be the fastest guys out there, at least for a moment. It occurred when Walt and I were flying our final training sortie. We needed 100 hours in the jet to complete our training and attain Mission Ready status. Somewhere over Colorado we had passed the century mark. We had made the turn in Arizona and the jet was performing flawlessly. My gauges were wired in the front seat and we were starting to feel pretty good about ourselves, not only because we would soon be flying real missions but because we had gained a great deal of confidence in the plane in the past ten months. Ripping across the barren deserts 80,000 feet below us, I could already see the coast of California from the Arizona border. I was, finally, after many humbling months of simulators and study, ahead of the jet. I was beginning to feel a bit sorry for Walter in the back seat. There he was, with no really good view of the incredible sights before us, tasked with monitoring four different radios. This was good practice for him for when we began flying real missions, when a priority transmission from headquarters could be vital. It had been difficult, too, for me to relinquish control of the radios, as during my entire flying career I had controlled my own transmissions. But it was part of the division of duties in this plane and I had adjusted to it. I still insisted on talking on the radio while we were on the ground, however. Walt was so good at many things, but he couldn't match my expertise at sounding smooth on the radios, a skill that had been honed sharply with years in fighter squadrons where the slightest radio miscue was grounds for beheading. He understood that and allowed me that luxury. Just to get a sense of what Walt had to contend with, I pulled the radio toggle switches and monitored the frequencies along with him. The predominant radio chatter was from Los Angeles Center, far below us, controlling daily traffic in their sector. While they had us on their scope (albeit briefly), we were in uncontrolled airspace and normally would not talk to them unless we needed to descend into their airspace. We listened as the shaky voice of a lone Cessna pilot asked Center for a readout of his ground speed. Center replied: "November Charlie 175, I'm showing you at ninety knots on the ground." Now the thing to understand about Center controllers, was that whether they were talking to a rookie pilot in a Cessna, or to Air Force One, they always spoke in the exact same, calm, deep, professional, tone that made one feel important. I referred to it as the " Houston Center voice." I have always felt that after years of seeing documentaries on this country's space program and listening to the calm and distinct voice of the Houston controllers, that all other controllers since then wanted to sound like that, and that they basically did. And it didn't matter what sector of the country we would be flying in, it always seemed like the same guy was talking. Over the years that tone of voice had become somewhat of a comforting sound to pilots everywhere. Conversely, over the years, pilots always wanted to ensure that, when transmitting, they sounded like Chuck Yeager, or at least like John Wayne. Better to die than sound bad on the radios. Just moments after the Cessna's inquiry, a Twin Beech piped up on frequency, in a rather superior tone, asking for his ground speed. "I have you at one hundred and twenty-five knots of ground speed." Boy, I thought, the Beechcraft really must think he is dazzling his Cessna brethren. Then out of the blue, a navy F-18 pilot out of NAS Lemoore came up on frequency. You knew right away it was a Navy jock because he sounded very cool on the radios. "Center, Dusty 52 ground speed check". Before Center could reply, I'm thinking to myself, hey, Dusty 52 has a ground speed indicator in that million-dollar cockpit, so why is he asking Center for a readout? Then I got it, ol' Dusty here is making sure that every bug smasher from Mount Whitney to the Mojave knows what true speed is. He's the fastest dude in the valley today, and he just wants everyone to know how much fun he is having in his new Hornet. And the reply, always with that same, calm, voice, with more distinct alliteration than emotion: "Dusty 52, Center, we have you at 620 on the ground." And I thought to myself, is this a ripe situation, or what? As my hand instinctively reached for the mic button, I had to remind myself that Walt was in control of the radios. Still, I thought, it must be done - in mere seconds we'll be out of the sector and the opportunity will be lost. That Hornet must die, and die now. I thought about all of our Sim training and how important it was that we developed well as a crew and knew that to jump in on the radios now would destroy the integrity of all that we had worked toward becoming. I was torn. Somewhere, 13 miles above Arizona, there was a pilot screaming inside his space helmet. Then, I heard it. The click of the mic button from the back seat. That was the very moment that I knew Walter and I had become a crew. Very professionally, and with no emotion, Walter spoke: "Los Angeles Center, Aspen 20, can you give us a ground speed check?" There was no hesitation, and the replay came as if was an everyday request. "Aspen 20, I show you at one thousand eight hundred and forty-two knots, across the ground." I think it was the forty-two knots that I liked the best, so accurate and proud was Center to deliver that information without hesitation, and you just knew he was smiling. But the precise point at which I knew that Walt and I were going to be really good friends for a long time was when he keyed the mic once again to say, in his most fighter-pilot-like voice: "Ah, Center, much thanks, we're showing closer to nineteen hundred on the money." For a moment Walter was a god. And we finally heard a little crack in the armor of the Houston Center voice, when L.A.came back with, "Roger that Aspen, Your equipment is probably more accurate than ours. You boys have a good one." It all had lasted for just moments, but in that short, memorable sprint across the southwest, the Navy had been flamed, all mortal airplanes on freq were forced to bow before the King of Speed, and more importantly, Walter and I had crossed the threshold of being a crew. A fine day's work. We never heard another transmission on that frequency all the way to the coast. For just one day, it truly was fun being the fastest guys out there.
I agree that the hypersonic movement is caused by the acceleration of the tip and that the acceleration is caused by conservation of momentum and the decreasing diameter (or, more exactly, mass density) of the whip along its length toward the tip. But I think the acceleration is still high even if the diameter or density is constant along the length of the whip. This is because of the following fact. At any time during whipping, we can devide the whip into two parts the upper part (near the tip) and the lower part (near the hand). The main momentum is generated by only the upper part because the lower part is almost stationary during whipping. Due to the law of conservation of momentum, the upper part has to speed up because the length (and mass) is decreasing during whipping. The rate of relative decrease of mass of upper part is, in fact, accelerating toward the end of the whipping process, which results in accelerating rate of relative increase of the speed.
The dedication SmarterEveryDay and Veritasium show in their videos toward science is the best thing that inspire me. As per my opinion you are two of the top three channels in youtube for scientific knowledge....
Probably not. He puts more prep work into them all the time. If every project takes months of lead time, coordination, and hours of input, he has to fit in family somewhere. If he sacrificed the depth for frequency, I don't think he'd still enjoy what he was making.
Fantastic guys, my husband use to crack whips all the time on his farm in Australia when he was young, ( his 63yrs old now ) and always wondered what caused the crack noise, and now he knows 😊. Great work. 😊😊
I just love how destin also explains how the process of capturing these things pictures work and not just the actual footage. Science within science within science
Great video! I recently learned how to crack a whip. The other day it was pretty cold, and I cracked it. My brother and I both saw a little cloud of condensation near where the crack started. The only explanation we can think of is that it was a small vapour cone, like at the nose of a fighter jet. If you plan to do another video about whip dynamics, it would be incredible if you mentioned that, and looked into it a bit more. (I would, but I don't have access to the same sort of setup as you) Thanks!
The conservation of momentum is right ofcourse, but I think a more useful way of looking at it is in terms of impedance matching. Basically you are trying to transfer energy from something heavy and slow to something light. The difference between this and a uniform length of rope is that you gradually change the impedance of the whip as the wave moves to the tip, so no reflections of the wave occurs. Then in the end, when the speed of the whip itself is high enough, you need to impedance match to the air. This is done by increasing drag while still impedance matching the whip itself. The solution is the special tip. It is nice and puffy so the drag is high but the weight is low. This transfers a lot of energy to the air, preventing a reflection from going back up the whip. I suspect that removing the last puffy bit decreases the crack, and increases the reflection of the wave. You can also make the whip long enough to eventually achieve an impedance match to the air, as drag increases super linearly with speed. But to keep the whip short it might be best to impedance match to the air as soon as the whip is super sonic. Compare to a length of rope. If you try to crack that, the wave will come back up the rope, and no part will be particularly fast ofcourse. An even more reflective experimental setup would be with rope where the end is secured to something. The wave would come right back and even feel violent. I also suspect that this gives a framework for optimizing whips from a theoretical perspective.
I’ll buy that. It makes sense. The same reason you have to make the end of your transmission line matched to the impedance of air for radiation at the antenna. Cool theory. I hope this is not the last video on this subject. I was fascinated from start to finish, as it seems you were too.
Like your charging chord, you may be able to apply the "whip effect" to a tape measure being loaded back in by the spring inside it, and the end metal piece whips you sometimes when it gets close to coiling back up.
@@sanstheskeleton5422 I thought she was meaning where the guy said this was the most conclusive test on how a whip cracks and the use of all three tests at once and that was history being made...like the guy said in the video. Nothing to do with slaves
I love this! Reminds of how, in saber fencing, a professional technique is hitting the opponents blade in such a way it “whips” around. Hurts like a mother. And also makes the tip of a saber the second fastest object in the olympics, only beat by bullets.
You should get National Funding from the Gov't for your research. You are doing so many great things and you are trully making us smarter everyday. Bravo and Thank you!
My wife pulled a vacuum cord out of a wall just like that whip. It came flying smack dead right on her nose it ended up breaking it and giving her 2 black yes. Now I can tell he it was fluid dynamics that broke her nose. GO SCIENCE!!!!
Everyone in the world should be subscribed to this channel. Never settle with the knowledge you have today. Everyday day you should be striving for more
Destin - can you put together a slow mo capture with some science behind it regarding ping pong? I've been playing regularly in recent months and we have some questions about what is really happening with the ball when doing a specific stroke called "looping." We think the ball is spinning on the surface of the paddle during this but its hard to imagine. Overall any slow-mo of the ball hitting the racquet would be super interesting to see. The speeds you can generate with a 2.7gram ball is something else. Sincerely, long time fan
I could be wrong, but I suspect some of what's happening is similar to dropping a bouncy-ball with a bit of spin. If you try that, you'll see the ball bounces back and forth, and that the spin changes on each bounce. As the ball reaches the floor, the rubber grips the floor and so stays where it is (the boundary condition mentioned at the start of the video but with air). However, the ball still wants to rotate so a torque is applied that twists the ball. This twist is essentially elastic energy which releases, causing the ball to spin in the opposite direction. My suspicion is that a similar thing is happening in table tennis, but that the deformation is to the rubber on the paddle. As the bat moves across the path of the ball, some of the rubber gets dragged back and stretched out. This energy is then released into the ball, causing it to spin. Another thing it's similar to is the hockey shots in some of Destin's other videos, where the stick hits the ice before the puck and gets deformed, before unbending and slinging the puck across the ice.
andymcl92 for sure. Seeing it would be interesting. There is a lot happening with spin received and spin given off the loop, and the relationship between the paddle angle and the moment of contact, and it’s relation to its trajectory off the table. To react in time to make a successful return has a lot going on
@@paulzeee And yet it's one of those skills that we develop an intuition for without a deep understanding of the physics involved! But as I always tell people, it's all in your feet!
@@GunFunZS The simple things I was talking about was the toy guns being in synch at the end. But yeah... even on big complicated concepts he's good at breaking it down for idiots like me to get it.
I think a lot of us have child-like enthusiasm for the simple things, his video views and subscriber count reflect this fact, but there's not many people that can chase them the way Destin does, not everyone carries a multi-thousand dollar high speed camera everywhere or have plentiful resources of space, equipment and contacts willing to help. Destin is lucky that he's got all of that, plus the education and time and willingness to present and broadcast his work to the whole world that continue to make this possible (even that alone I wouldn't be able to do) so to have someone like Destin do this for us is certainly a special thing indeed.
Undergrad Physics classes in 2007 were teaching about this. Essentially the tension on the string approaches infinity as the wave tries to propagate but doesn't have any more length to propagate into, resulting in a massive acceleration.
The total energy transferred from the arm to the whip and from the whip to the tip and from the tip to the air is mostly constant (deprecating the friction loses) and the only way to keep that energy when the whip is fully elongated is to concentrate all that energy in the rotational momentum of the final millimeters of the whip tip, the only way that momentum to concentrate that amount of energy is rotate so fast that remaining section of the tip breaks the supersonic speed and creates the shock waves. This is a cool video!
just make sure to include the part that almost anything can be used as a whip so the dynamics must work even if the weight and length doesn't decrease further along. So cool!
4:56 Her Father : Mechanics expert Her Brother : Aerodynamic expert Her Ex : Aerodynamics ATOM expert The girl I like : Hot whipping Asian ME : Just learning stuff
Videos like this are the reason I decided to finally go to college at 23 for Computer Science, people may make fun of science at school and it may be dry material but the payoffs in applying science are unparalleled
Why isn't anyone talking about how he literally discovered a new way to analyze Whip cracking? Literally the first person in HISTORY?? All for a TH-cam channel???
@@pancouvervenguins8573 just because he’s a TH-camr doesn’t mean he doesn’t have experience in the field, his entire channel is about his scientific experiences and experiments, he’s just putting it on TH-cam because it’s a good way to publish and make money doing it
@@rolandcaters7258 yeah they’re actual scientists doing experiments. But you’re crazy if you think no one has done a slow motion video of a whip before. the technology has existed for a while. it’s not like they made an amazing new discovery
@@pancouvervenguins8573 well yes, but it is unlikely someone before used all the imaging techniques currently available and used in this video, which is more than just slow motion. It’s entirely possible it’s been done before, I will admit that, however he is still doing the experiments himself
The whip tip accelerates after the shock wave for the same reason rocket exhaust accelerates after it passes through the throat of the rocket engine and become supersonic. Once the flow becomes supersonic there can be zero pressure(by definition) against the direction of the flow. The air particles are pushed into what, to them, behaves like a instantaneous vacuum as any particles in front of them are moving away from them at supersonic speed. In the case of the whip tip there is a small pocket of what is essentially vacuum just behind the shock wave and the whip gets pushed into this by air pressure.
@Tom JLB: Interesting: what you’re describing, resembles what Aristotle postulated about projectiles soaring through air. Namely, he believed there was only linear motion on Earth, and that an earthy or watery object (this includes metals, wood ...) would always move towards the Earth, and in linear fashion. Therefore, a projectile (say, a wooden arrow, or rock ...) flying in a parabolic trajectory seemed inexplicable, so to solve the problem, he devised that the projectile itself wanted to move downwards, but was thrusted upwards due to air rushing into pockets of vacuum left by the projectile behind it. This would gradually die off, as the process wasn’t 100% efficient. Applied to a whip, his theory is the exact opposite of what you’re saying happens; fascinating! Source: Wrote a 40-to-50-page paper on Aristotelian physics as final project in high school.
TheBetterGame Well, if heat is just moving particles and the ability to break the soundbarrier is due to something moving faster than sound travels then why couldn't it work? Popcorn pops due due the trapped water inside turning into steam via heat. So, what are the limitations of thermal energy here? What is the shortest time required to make a popcorn pop? Are you really sure it can't be done?
@@KyuubiSam There's different ways something can heat up. It isn't as simple as something moving very fast. When it comes to popcorn, the water inside needs to be excited. Unless I'm mistaken, that happens when a heat source constantly bombards the kernel. Moving very fast cause heat through friction and rapid pressure change, not rapid energy bombardment. Unless I'm missing something, I doubt fast movement will make popcorn.
I love watching your older stuff and hearing you recommend books that I have already read. We have very similar interests. Skunkworks is one of my favorite books. It is not only an interesting story of the U2 and SR-71, but it is also a master class in project management and overcoming unexpected challenges.
They had to make it out of titanium which was only found in Russia at the time so they had to figure out how to get enough titanium from Russia into the states without Russia knowing what they were up to. Also, due to the heat they had to purposely make the panel's so they didn't mesh together because the metal would expand when it heated up causing the panels to fit properly in flight. Essentially when the jet was on the ground it was very loosely fit together to the point where the jet would leak fuel all over the runway before takeoff.
@@GaminGit You didn't catch the audible commercial where he mentioned it near the end of the vid? I just felt like throwing out some random info. It's the interwebs you can do that. 😉 So, in short, the answer to your question is simply, because....
Possibly a myth. Naturally, this is the common explanation, and as classified as the tech is there is no way to be sure... But SpaceX is using similar tech to intentionally leak fuel across the body of the craft for cooling. This makes a lot more sense to me than engineers not knowing what a flexible seal is, especially since heat is by far the biggest concern. The leaking may have been intentional to cool the craft with the easiest at-hand fluid: the top secret and curiously specialized rocket fuel.
And here I thought the leaking was to due to the metal sheets being slightly too small to give them room to expand from the heat that occurs at supersonic flight. The reason for this would be to achieve the best possible aerodynamics at the highest speed necessary.
Since the schleiren technique doesn't use the light reflecting off the whip, is it possible to set up two (or more) separate schleiren setups at different angles but focusing on the same point in space, then use photogrammetry software to create a 3D view of what's happening to the air density?
Bruh instant subscription
Thanks Bruh. Hit that bell if you're up for it.
Totally!
Same
I’ve been watching for years yet just realized I wasn’t subscribed
🙏❤️😍😘🌼🗣️🎆🛐✝️
Destin, this is some serious hardcore science! AWESOME!
You know what that morning upload means... Destin's been awake the entire night. Thanks for stopping by Derek!
Never could do the colored schlieren as well as you did!
Check Derek's video out here: th-cam.com/video/4tgOyU34D44/w-d-xo.html
This is why I love science. Science is progressive learning and I can see my future children in their science class looking back at fluid dynamics when it comes to this discovery thanks to you.
@@smartereverydayI love the video you guys did on the coriolis effect!! much love from england
You guys are literally making history. Do you understand that there’s a whole new scientific community behind you guys? Brace your gray hairs Derek! Congratulations.
One moment in my life I was eating spaghetti and I slurped a single noodle as fast as I could and I got whipped in the face by the end of the noodle. Thanks to this data I understand now why the spaghetti noodle acted as a bull whip.
That's facts.
That's a different level of unlucky that happened to me aswell
Got whipped by a noodle
LMAO 😂 I read that entire thing wrongly
Spaghetti broke the sound barrier
This is why I love the internet. You can take something as unbelievably complicated as a supersonic physics and make a compelling video simple enough for a common person to understand. Not only that, but you're showing things that are likely the world's first observations, and sharing them with the entire world
@Mephisto Pheles yeah, but thats why we have to look for quality content/channels like this one right here
she blinded me with science!
The world is complicated enough at different time speeds and scales. It is all there, he is the Wizard that makes us see what really happens in our quotidian world.
He gives a good name to his University. This is the BEST WAY to promote education. Everybody will drop 50,000 dollars on a physics or engineering education without any hesitation.
It's the distribution of interesting observations that is the difference.
When I needed to understand supersonic (flight) I had to go to the University Library.
Now I sit at home with coffee and toast and hit search and CLICK!
The problem is all the interference and distractions on the Web and it's hard to find channels like this without accidentally looking at bikini try-ons
That ladies kids are the most disciplined kids on Earth.
You watching this just now well you are not alone.
@@bread5050 late 1 day
Bro me too
Chanclas got nothing on her whip
Sure because she cracks the whip all of the time 😋😁🤣
OMG! 40 years ago a girlfriend convinced me to join her in an evening class where we made our own braided leather bullwhips from scratch. We started with tanned hides, sliced them, shaved them, dressed the strips to precise tapers, oiled then braided them. It took a team of two about 20 hours to make both whips. Then we got to learn various techniques, from gently capturing things (we learned to wrap our whip around a balloon without popping it), to wrapping hard enough to break things (my favorite was sidewalk chalk, which exploded).
But the best part was learning to crack our whips. We started by simply rolling the loop of the whip down onto the floor, where it would snap when the tip smacked down. Then we gradually added more energy, a truly small amount at a time, until it started to crack in the air. Large, graceful motions that finished with a crack. Then we learned quicker moves that brought the snap a little closer in, where we learned to place it where we wanted it. I envied the folks who were ambidextrous with their whips, because my right arm was getting ready to fall off.
We wanted to see if we could capture the motion of the whip by cracking it horizontally over sand, so a few of us took our whips to the beach and tried to crack the whip horizontally within an inch of the sand. Almost impossible to do, but once in a while we did notice a puff of sand happening well before the whip had reached full extension, from a part of the whip not in contact with the sand. If only...
Fast forward 25 years, and I was on the team making a camera that could take 100,000 frames per second (the Redlake HG-100K). When the third alpha unit became the first to work at full speed, we searched for targets that would both test the camera and thrill Marketing. Popping a balloon wasn't nearly fast enough. I thought back to my days with the bullwhip, and we immediately went out and bought a few. Despite dumping a zillion lumens into the field of view, nothing useful came of it. (Clearly, using Schlieren photography and capturing the shockwave is crucial.)
What we did wind up doing was pointing the camera at the HID bulb in an Epson video projector (torn from the ceiling of a conference room), where we captured the most amazing video of the arc wandering between the electrodes within the bulb envelope. We put a GIF of the sequence up on our website (this was before TH-cam), which caused some small level of buzz online. The next morning we received phone calls from the Japanese executives of both Epson and Panasonic (the maker of the bulb). It turns out that arc wander was the primary factor limiting projector sharpness, so stabilizing the position of the arc was crucial to gaining any benefit from using higher-resolution LCDs. Two days later they were in our offices for a demo, and left an awesome pile of money behind when they departed with our very first beta unit. Their problem was that high-speed film limited the rate of innovation to one test run per day, with the film developed overnight: Our camera allowed them to do a dozen runs every day, leaping their R&D further ahead of the competition.
You may have noticed I mentioned we had to go out and buy some bullwhips. My treasured handmade bullwhip had disintegrated within a year of making it: Evidently, the tanning process used on the leather wasn't compatible with the oil we applied to it. It sure was fun while it lasted.
Now you two have got me wanting to make another one!
😅 sorry bro too long
Pretty nice story.
Wow, that was interesting to read
What a great story! The Epson and Panasonic meeting sounds incredible and satisfying.
BobC great story!
I've been subscribed for almost 4 years I believe and this has to be the most interesting video you've made in my opinion. Keep up the good work!
Thank you!
@@AprilJenniferChoi This is April everyone. Thanks again for coming to to Bama and for all the help! Let's get this analysis done and publish together!
@@AprilJenniferChoi Thank you for helping us get Smarter Every Day! This is a fascinating and profound insight. I'm excited to see what you and Destin will publish from this.
Next to the Ruperts Drop, which is the video that hooked me to this site. Oh, and @April Jennifer Choi , you are awesome too! Great stuff.
I second that! It's indeed the most interesting one for me, not only here but on TH-cam as well, it's my first time ever to make a comment on a TH-cam video.
"Let's make a TH-cam video!"
"Let's publish research!!!!"
IT GOES FASTER THAN THE SPEED OF SOUND IS THE ANSWER
Why not both?
@AIDYS LAYN it would be much better if you didn't whisper and used your voice more precisely, good job anyways, keep it up :)
This is why I love this channel. TH-cam videos that are worthy of being published studies.
thunderf00t had also quite surprising paper grow out of a youtube project - he had also include aknowledgement of help of his patreon supporters into it.
Honestly, I'm still just impressed that people figured out how to make the whip do that hundreds if not thousands of years ago. And only NOW do we understand exactly why it does that. So cool.
Same bro
There's thousands of inventions that humans made without even the slightest clue what we were doing and I love it
In another field, we still dont know at all how molecules like aspirin or paracetamol "work"... It's the case for boatloads of older pharmaceutical products. Nowadays the mechanisms need to be understood before the drug is even admissible to trial...
Nice that people picked up on the scripture
Like how bikes work, fascinating stuff.
>Goofs around with a high speed camera.
>Accidentally gets a PhD in whip mechanics.
3) . . .
4) Profit !
This is so freaking cool.
Hi Sabrina.
@@smartereveryday Hi Destin.
SmarterEveryDay I love your videos. I nerded out so hard
This is the type of youtube channel that deserves ad revenue and sponsors because they put work in their videos, real work. Videos that are compilations of other videos do not deserve revenue
Especially cause they're actually doing scientific research TH-cam should fund that same with channels like styropyro
Also people who upload copyrighted clips and expect you to "smash that like button" for monetization.
I just want you to read Skunk Works.
wrong, this is all stolen, but it is easy to steal now due to the cheap cameras
names zeus actually wrong compilations lead people here and one of those compilations might lead the next innovator or inventor right here and onto changing the world
In case anyone wonders about the strange costume in the german paper at 4:11 😂
...this is traditional carneval in southern germany, to be exact in the Region around the Black Forest. One key element in this tradition, besides the costumes, is the whip cracking to scare the winter ghosts away.
Greetings from the Black Forest, Germany😉
Is it a moose or a reindeer?
@@Nailtothewall I think it's none of them
Amazing! Thanks for the insight. I thought it was one of Santa's Christmas reindeer. 🤭
@@Blvd40 Haha you're welcome! There are always new things to learn😋
Grüße aus Calw 😂
4:54 destin: learning stuff
Destin getting whipped by that chip and lovin' it..... in the name of science you silly! ha-ha-ha
This video was absolutely fascinating, and I feel privileged to witness this development in human understanding.
Had a moment in the video where I said, “wow, that’s a lot of doctors!”
You must consume a tremendous amount of Richard and Mortimer
You can go be edgy somewhere else dude, this is legit cool and you're souring the mood.
Very happy to witness the moment. I think more people will start to record and study the daily science never be notice before.
Papzi Richard and Mortimer 😂
Arexsis what?
Great work, Destin!
i agree with u ... and i love your channel
Thank you Ben
It’s so nice to see when my favorite youtubers follow each other 🥰
Great moves
Keep it up
Proud of you
"She's good with whips"
Me: "Continue"
Why
Yuichiro.
I'm pretty sure she likes to be called a she, but that back says she's factually a he 5:22
@@BoianTV she do be a she tho
@@BoianTV I was wondering about that. The voice is a giveaway..
best example that everyone can relate: when you slurp on noodles and when the end of one is right before your face, it smacks you
It's usually the hot water hitting me in the eye
@@aaronw2k8 Mine always ends up on my shirt. Insufficient velocity?
@@jfan4reva Haha. It sounds like that could be the case or wrong angle
Lol
@@jfan4reva the no-slip boundary condition doesn't work on noodles.
The guy in the wierd suit is part of a celebration in Southern Germany. It is called 'Alemannische Fasnet'. In this tradition, people gather every spring around February for parades. The people in the parades usually wear historical costumes. Part of this custom is to make a lot of noise with bells, ratchets and sometimes also with whips.
I can break the sound barrier with a bath towel.
NATHAN M. This made me laugh SO HARD!! THANKS.
🤣
@@sebcrakpot1234 I don't hit people with my wet towels but I can get a very loud crack out of them. I think its definitely breaking the sound barrier.
Same I just did it yesterday
I've hit my sister with a big duvet. We both were amazed
This made me realise that Einstein would probably have a TH-cam channel too explaining science and publishing new scientific papers
probably not though, he didn't do a lot of the "legwork" that good quality video production requires, he would obscure and probably have next to no subscribers
Einsteins papers were too hard for even the greatest scientists of his day so I really doubt he would make videos when nobody would be able to follow his reasoning. When a journalist asked the British astronomer Sir Arthur Eddington if it was true that he was one of only three people in the world who could understand Einstein’s relativity theories, Eddington considered deeply for a moment and replied: “I am trying to think who the third person is.” - B. Bryson
Today the theory of relativity has been watered down so more people can understand it but if you go deeper to the more advanced stuff you will realise that its extremely unintuitive and very few people would actually comprehend it completely. There are websites like research gate which are suited for scientific papers. Einstein would be wasting his time on youtube.
This video right here is baby physics compared to what Einstein did.
I like to imagine what Einstien would have been like as a guest on StarTalk.
*Einstein the Science guy* ?
@@sladechain573 yeah, not epstein if you were thinking about him
I love how this escalated from messing around with high speed schlieren photography to writing a groundbreaking paper on whip dynamics.
Me too!
soundbarrierbreaking paper. Fixed that for you
H W I P D Y N A M I C S ~
4:10 “there’s a dude in it that looks like a moose wearing bells and a clown suit” EXCUSE U HE’S CLEARLY A REINDEER 😤🎄
Ahh, finally, a man of culture.
Ah yes, The Whip-Cracking Reindeer Man...
Bruh
I'm dying
The south of Germany is a different breed of people 😂
Contributing to research and making TH-cam videos? Dope.
It doesn't get any more awesome than this.
Aleksey Soldatenkov
i was about to say that😂😂
I love how... iv been watching SED for years... and a question pops in to my head, and I youtube search it... and here you are! Perfection.
Asians: It's just a belt, it can't hurt anybody.
The belt:
The blank : break the sound barrier
Asian parent*
Mexican parents too lol
Black Parents breaking the sound barrier
Latin American moms: Its just a sandal it cant hurt anybody
The sandal:
Hang on I just realized something.... the whip in slo mo looks exactly like the dancing inflatable guys outside of car dealerships.. SOOO if the inflatable moved fast enough... oh god SUPERSONIC INFLATABLE MEN
Great 👍
Finally, I can beat my grandma in jumbo size
Why did this comment get so many more replies
We found the orginal chad bois
@@Minelaughter they deserved them
4:19 "I'm limited by the technology of my time"
lshadowSFX LMAO
Sounds like a line you could put in a movien...😝😝😝
He should hide it in a model of his building.
@@Allan_aka_RocKITEman that line is also from a movie xD
That quote 🤣
I hypothesise that the knot that helps to start the force of the air breaking, leading the waves, is just enough mass change in a quick transition towards the end of that whip that is the ultimate catalyst, seeing as how the wave suddenly goes from very little mass to a sizable addition of mass, and the frayed ends are trying to catch up to the equilibriam of pressure exerted by the wave as the sound barrier is broken.
Great work on this, my science bug is wanting more. Subbed for awesome whip cracking science!
3:40 Oh wow, you can actually see the shock wave initiate. You're literally seeing it as it goes from subsonic, to transonic to supersonic, right? That's incredible
!!!! What the heeeckkk!!!! I thought this was going to be an easy answer! Then the video kept getting deeper and deeper as the mystery kept on raveling and unraveling and I got more and more confused as I realized that I know less and less and I've never been more excited to know that I know nothing!
I had NO idea that a whip could be such an incredibly beautiful and complicated piece of artistry. Think about that! We have jetpacks and lasers and cars in space and still do not understand how whips work. This is so exciting and cool to me that I can't even explain it.
You might say the video gave you....
whiplash
Nice
The Matrix they don’t put too much emphasis on it because it doesn’t benefit WARS.
That is the exact process any scientist/engineer goes through when researching *anything*. When you come out with more questions than when you came in, you're doing science right.
@@cutformllc3451 "No quite my tempo"
That was awesome! A little channel called Peninsula Seniors has a bunch of lectures from quite a few SR-71 pilots with their personal stories of flying the plane. Really good stuff for Blackbird fans.
Hi i'm a Taoflederfolks
You guys should use the schlieren method for your you build it we shoot it series it could Help with spotting why some rounds are more aerodynamic than others
Thanks jeff!
Lasfit honda cr-v
I literally just finished watching your most recent video before watching this. Wasn't expecting to see that name in the comments.
My 5 year old daughter loved this video. She wanted yo see what the tiny explosion looked like that i had mentioned when she tried hitting me with a t shirt. Didnt realize this isnt a phenomenon that was often filmed. Thank you. Truly.
9:39 dabbed so hard he teleported.
tHaT wAs FaSt Wa’N It
I love that scientist youtubers are friends together and not opponents.. but of course, they’re smart
He's not a scientist..
He is a Government shill 🐑
@@howinthewhat anyone that researches and publishes papers is the definition of a scientist. We learnt this in the first year of my science degree. Just because you may have the science degree, doesnt mean you are a scientist
@@jacksonwhitbread5503 yeah true but he said that he's only a "youtuber and engineer" but idk..
@@jacksonwhitbread5503 is he research or making video of ppl research ?
3:10 there's that look again. I see it so often in your videos...that spine tingling experience of discovery. I love it!
This was actually a lot more interesting than I thought it would be.
I got to experience this phenomenon firsthand when I picked my wife up for our first date. She was still drying her hair with a towel and she thought it would be cute to throw the towel at me. So I thought it would be cute to pretend that I was going to “whip” it at her. With a lazy motion I whipped the towel towards her but unfortunately that towel conserved energy perfectly. The crack was so loud that I am pretty sure it broke the sound barrier and left A bruise on her bottom even through her jeans. And with all that we were still married a few years later and have been for over 18 years. 😄
Growing up, my brothers and I routinely had battles in the kitchen with cotton tea towels (no idea what you'd call them in the States, we used them for drying dishes). The ones with a fringe on the end cracked better, though the cotton weave disintegrated fairly quickly with repeated abuse. You really didn't want to cop a loud one on bare skin, it would raise quite a welt!
Great for taking down flies, though... :-D
The kink is strong with u
Bruh that’s very kinky 0-0
“I think all this whip business is a reason for you to explore *pause*” Hold up now
XD
B R U H
I liked this video, at 8 mins 25 seconds when I realized how the whip looks like it holding the shock wave like it was a ball , and the Shockwave got bigger the further it traveled the whip. And it wasn't until the tip of the whip started coming out of loop at the end . The force behind the whip loop grew stronger and then there wasn't enough whip material left at the beginning of the shock wave to hold back that collection of energy from the speed f the whip. I looked at the Shockwave as it's water and you could cast out a tarp into water . And pulling in the tarp is the same has the whip being extended, so as the whipped travel in the air it collected energy in the from of are atmosphere atoms of oxygen an nitrogen. But the whip velocity and it material is able to pick up enough atmosphere particles at the beginning of the Shockwave released all those atmospheric particle and a high speed which is what creates the Shockwave it's self , cause you need sometype of substance there to be big enough and fast enough to break the atoms in the atmosphere apart.
Wow, a perfect video, even the plug for Audible was informative and captivating. Love your work, and the fact you seem to enjoy it so much. Keep it up.
Seriously... read the book. text "smarter" to 500-500.
Skunkworks was a badass read.
As a whip maker and instructor, this is the coolest video you could have put out! Thank you! One thing we've noticed is that different popper materials and fluff length actually change the tone of the sound - to be sharper or duller. It would be amazing if you were able to explain that using this new model!
It looked like the shockwave from the knotted tip was much less powerful than the fluff. It still goes supersonic without the fluff, but it's not as loud.
There were a lot of things we couldn't do in an SR-71, but we were the fastest guys on the block and loved reminding our fellow aviators of this fact. People often asked us if, because of this fact, it was fun to fly the jet. Fun would not be the first word I would use to describe flying this plane. Intense, maybe. Even cerebral. But there was one day in our Sled experience when we would have to say that it was pure fun to be the fastest guys out there, at least for a moment.
It occurred when Walt and I were flying our final training sortie. We needed 100 hours in the jet to complete our training and attain Mission Ready status. Somewhere over Colorado we had passed the century mark. We had made the turn in Arizona and the jet was performing flawlessly. My gauges were wired in the front seat and we were starting to feel pretty good about ourselves, not only because we would soon be flying real missions but because we had gained a great deal of confidence in the plane in the past ten months. Ripping across the barren deserts 80,000 feet below us, I could already see the coast of California from the Arizona border. I was, finally, after many humbling months of simulators and study, ahead of the jet.
I was beginning to feel a bit sorry for Walter in the back seat. There he was, with no really good view of the incredible sights before us, tasked with monitoring four different radios. This was good practice for him for when we began flying real missions, when a priority transmission from headquarters could be vital. It had been difficult, too, for me to relinquish control of the radios, as during my entire flying career I had controlled my own transmissions. But it was part of the division of duties in this plane and I had adjusted to it. I still insisted on talking on the radio while we were on the ground, however. Walt was so good at many things, but he couldn't match my expertise at sounding smooth on the radios, a skill that had been honed sharply with years in fighter squadrons where the slightest radio miscue was grounds for beheading. He understood that and allowed me that luxury.
Just to get a sense of what Walt had to contend with, I pulled the radio toggle switches and monitored the frequencies along with him. The predominant radio chatter was from Los Angeles Center, far below us, controlling daily traffic in their sector. While they had us on their scope (albeit briefly), we were in uncontrolled airspace and normally would not talk to them unless we needed to descend into their airspace.
We listened as the shaky voice of a lone Cessna pilot asked Center for a readout of his ground speed. Center replied: "November Charlie 175, I'm showing you at ninety knots on the ground."
Now the thing to understand about Center controllers, was that whether they were talking to a rookie pilot in a Cessna, or to Air Force One, they always spoke in the exact same, calm, deep, professional, tone that made one feel important. I referred to it as the " Houston Center voice." I have always felt that after years of seeing documentaries on this country's space program and listening to the calm and distinct voice of the Houston controllers, that all other controllers since then wanted to sound like that, and that they basically did. And it didn't matter what sector of the country we would be flying in, it always seemed like the same guy was talking. Over the years that tone of voice had become somewhat of a comforting sound to pilots everywhere. Conversely, over the years, pilots always wanted to ensure that, when transmitting, they sounded like Chuck Yeager, or at least like John Wayne. Better to die than sound bad on the radios.
Just moments after the Cessna's inquiry, a Twin Beech piped up on frequency, in a rather superior tone, asking for his ground speed. "I have you at one hundred and twenty-five knots of ground speed." Boy, I thought, the Beechcraft really must think he is dazzling his Cessna brethren. Then out of the blue, a navy F-18 pilot out of NAS Lemoore came up on frequency. You knew right away it was a Navy jock because he sounded very cool on the radios. "Center, Dusty 52 ground speed check". Before Center could reply, I'm thinking to myself, hey, Dusty 52 has a ground speed indicator in that million-dollar cockpit, so why is he asking Center for a readout? Then I got it, ol' Dusty here is making sure that every bug smasher from Mount Whitney to the Mojave knows what true speed is. He's the fastest dude in the valley today, and he just wants everyone to know how much fun he is having in his new Hornet. And the reply, always with that same, calm, voice, with more distinct alliteration than emotion: "Dusty 52, Center, we have you at 620 on the ground."
And I thought to myself, is this a ripe situation, or what? As my hand instinctively reached for the mic button, I had to remind myself that Walt was in control of the radios. Still, I thought, it must be done - in mere seconds we'll be out of the sector and the opportunity will be lost. That Hornet must die, and die now. I thought about all of our Sim training and how important it was that we developed well as a crew and knew that to jump in on the radios now would destroy the integrity of all that we had worked toward becoming. I was torn.
Somewhere, 13 miles above Arizona, there was a pilot screaming inside his space helmet. Then, I heard it. The click of the mic button from the back seat. That was the very moment that I knew Walter and I had become a crew. Very professionally, and with no emotion, Walter spoke: "Los Angeles Center, Aspen 20, can you give us a ground speed check?" There was no hesitation, and the replay came as if was an everyday request. "Aspen 20, I show you at one thousand eight hundred and forty-two knots, across the ground."
I think it was the forty-two knots that I liked the best, so accurate and proud was Center to deliver that information without hesitation, and you just knew he was smiling. But the precise point at which I knew that Walt and I were going to be really good friends for a long time was when he keyed the mic once again to say, in his most fighter-pilot-like voice: "Ah, Center, much thanks, we're showing closer to nineteen hundred on the money."
For a moment Walter was a god. And we finally heard a little crack in the armor of the Houston Center voice, when L.A.came back with, "Roger that Aspen, Your equipment is probably more accurate than ours. You boys have a good one."
It all had lasted for just moments, but in that short, memorable sprint across the southwest, the Navy had been flamed, all mortal airplanes on freq were forced to bow before the King of Speed, and more importantly, Walter and I had crossed the threshold of being a crew. A fine day's work. We never heard another transmission on that frequency all the way to the coast.
For just one day, it truly was fun being the fastest guys out there.
you deserve more likes for this beautiful story! thanks for sharing!
It's copy pasted and can be found on the internet.
However, it's been a while and I also appreciate the post.
@@SoundlessScream oh, I see
Weird flex but ok
Love this story
I agree that the hypersonic movement is caused by the acceleration of the tip and that the acceleration is caused by conservation of momentum and the decreasing diameter (or, more exactly, mass density) of the whip along its length toward the tip. But I think the acceleration is still high even if the diameter or density is constant along the length of the whip. This is because of the following fact.
At any time during whipping, we can devide the whip into two parts the upper part (near the tip) and the lower part (near the hand). The main momentum is generated by only the upper part because the lower part is almost stationary during whipping. Due to the law of conservation of momentum, the upper part has to speed up because the length (and mass) is decreasing during whipping. The rate of relative decrease of mass of upper part is, in fact, accelerating toward the end of the whipping process, which results in accelerating rate of relative increase of the speed.
Well, I learned something
im seeing you everywhere 😂
Too fascinating seeing most of the sciencey youtubers at once
That u have to go to bed now young man.
The dedication SmarterEveryDay and Veritasium show in their videos toward science is the best thing that inspire me. As per my opinion you are two of the top three channels in youtube for scientific knowledge....
And mark rober
When you kinky and scientific at the same time😏
Harry Browneigh
🧐 now hold on for just a minute....
@Harry Browneigh careful, April is awesome, but has a few surprises for you. 🤔🤣
@@ZeroSpawn she might have A big surprise
Harry Browneigh hol’ up
420th like, it was an honor
9:02 I love how he put eye protection on for this explanation
I'm watching this thing develop and grow... It's amazing
This is the single most incredible thing I have ever learned.
There's a lot of other stuff to learn about out there...
We went from Smarter Every Month to Smarter Every Week. In a few years we’ll finally have a literal Smarter Everyday
Probably not. He puts more prep work into them all the time. If every project takes months of lead time, coordination, and hours of input, he has to fit in family somewhere. If he sacrificed the depth for frequency, I don't think he'd still enjoy what he was making.
@@GunFunZS Duh, it was a joke... Unless you went full irony, then it's r/wooosh for me
Well... He started out with a video every day.. pfft!
Fantastic guys, my husband use to crack whips all the time on his farm in Australia when he was young, ( his 63yrs old now ) and always wondered what caused the crack noise, and now he knows 😊. Great work. 😊😊
Interesting, now how can we apply this to space travel.
Attach a spaceship to the end of a huge whip and get to space without rocket fuel
@@JackSpasojevich the only problem is that the spaceship could only weigh a couple of kilograms and you'd already need a massive qhip
You know those g-force traning things? Make it like that but vertical and can detatch the pod after ~7g's and make sure its pointing upwards
Ever heard of less air the higher you go and it would be impossible whips are to heavy and they don’t generate enough thrust
Intergalc-whip
I just love how destin also explains how the process of capturing these things pictures work and not just the actual footage. Science within science within science
Cube root of science or science cubed lol
Fighter Jets: we can break the sound barrier
THE whip: well That's cute
commenting here before this blows up
M32
And people used these as a torture method centuries ago..
Hold my high speed camera...
The funny thing is i saw his f16 fighter jet video breaking the sound barrier and started to search about super sonics
I like that Destin refer himself as 'learning stuff' instead of adding title. Humble guy :)
Great video! I recently learned how to crack a whip. The other day it was pretty cold, and I cracked it. My brother and I both saw a little cloud of condensation near where the crack started. The only explanation we can think of is that it was a small vapour cone, like at the nose of a fighter jet. If you plan to do another video about whip dynamics, it would be incredible if you mentioned that, and looked into it a bit more. (I would, but I don't have access to the same sort of setup as you)
Thanks!
The conservation of momentum is right ofcourse, but I think a more useful way of looking at it is in terms of impedance matching. Basically you are trying to transfer energy from something heavy and slow to something light. The difference between this and a uniform length of rope is that you gradually change the impedance of the whip as the wave moves to the tip, so no reflections of the wave occurs. Then in the end, when the speed of the whip itself is high enough, you need to impedance match to the air. This is done by increasing drag while still impedance matching the whip itself. The solution is the special tip. It is nice and puffy so the drag is high but the weight is low. This transfers a lot of energy to the air, preventing a reflection from going back up the whip. I suspect that removing the last puffy bit decreases the crack, and increases the reflection of the wave. You can also make the whip long enough to eventually achieve an impedance match to the air, as drag increases super linearly with speed. But to keep the whip short it might be best to impedance match to the air as soon as the whip is super sonic. Compare to a length of rope. If you try to crack that, the wave will come back up the rope, and no part will be particularly fast ofcourse. An even more reflective experimental setup would be with rope where the end is secured to something. The wave would come right back and even feel violent. I also suspect that this gives a framework for optimizing whips from a theoretical perspective.
Huh, I was seeing a charge-pump; charge a bank of capacitors in parallel, discharge them in series.
Same net power, higher voltage.
I’ll buy that. It makes sense. The same reason you have to make the end of your transmission line matched to the impedance of air for radiation at the antenna. Cool theory. I hope this is not the last video on this subject. I was fascinated from start to finish, as it seems you were too.
Similar the issues involved in speaker design.
Very clever analysis, Casper.
@@jaydgreen1 I think it is exactly that!
I clicked so fast my finger broke the sound barrier.
Lol
I clicked so clicky that I clicked the click barrier
Lol
Mood
Ow
Like your charging chord, you may be able to apply the "whip effect" to a tape measure being loaded back in by the spring inside it, and the end metal piece whips you sometimes when it gets close to coiling back up.
This 11:21 minutes flew by as if the video was just 1 minute long
I know, I didn't want it to end, I hope that they release this research as a paper.
When i read your comment, i said "no way was that 11mins long" then i looked back at the video.. 😳😮
the video moves faster towards the end like a whip
This is the sound when your Mexican dad takes out the belt
Mine was Irish. Lol.
@@SIC-SEMPER-TYRANNIS and la chancla is like an atomic bomb you cant escape it!
Michelle Magallanes Latina moms
Indian parents
This is so true
The moment you realized you just watched history being made.
Hm?
@@mikado_m think about slavery
@@sanstheskeleton5422 what?
@@derrickmeade4891 he/she didn't get the joke/truth so i TRİED to explain it
@@sanstheskeleton5422 I thought she was meaning where the guy said this was the most conclusive test on how a whip cracks and the use of all three tests at once and that was history being made...like the guy said in the video. Nothing to do with slaves
I love this! Reminds of how, in saber fencing, a professional technique is hitting the opponents blade in such a way it “whips” around. Hurts like a mother. And also makes the tip of a saber the second fastest object in the olympics, only beat by bullets.
You should get National Funding from the Gov't for your research. You are doing so many great things and you are trully making us smarter everyday. Bravo and Thank you!
Not true. Destin should rename the channel to Smarter Every Week. :P
Tried to apply for NSF outreach grant a couple of years ago and was told I'm not elligible because I'm not an institution.
@@smartereveryday When are you going to make the Sandlin Institute of Technology?
@@smartereveryday Whats the condition to be an institution?
I wonder what it would take to create the Destin Sandlin Institute for Learning?
3:07 I love how they both freak out at science at the same time lol
My wife pulled a vacuum cord out of a wall just like that whip. It came flying smack dead right on her nose it ended up breaking it and giving her 2 black yes. Now I can tell he it was fluid dynamics that broke her nose. GO SCIENCE!!!!
IM NOT THE ONLY ONE
Sure. The "vacuum cord" just "accidentally" broke her nose
@@skeetsmcgrew3282
Well, that got dark quickly.
f
Somehow, I doubt she will be entirely appreciative :D
4:10 now this is a legendary reaction
This is one of the best channels of all time.
Thanks for the kind words. Lots of people helped on this one.
This is insane. Please do an update video for us to let us know how this turns out!
No, he means the strange pull the tip experiences I think
9:02 **wears goggles in car for dangerous demonstration**
Goggled is my rested state.
I think that was take 2... after take 1 without goggles :D lessons learned :D
Ballistically rated*
well, Cody from Cody'sLab wears gloves to do math . . . you can never be too safe 👍
Everyone in the world should be subscribed to this channel. Never settle with the knowledge you have today. Everyday day you should be striving for more
Destin - can you put together a slow mo capture with some science behind it regarding ping pong? I've been playing regularly in recent months and we have some questions about what is really happening with the ball when doing a specific stroke called "looping." We think the ball is spinning on the surface of the paddle during this but its hard to imagine. Overall any slow-mo of the ball hitting the racquet would be super interesting to see. The speeds you can generate with a 2.7gram ball is something else.
Sincerely,
long time fan
I would love to see that too.
I could be wrong, but I suspect some of what's happening is similar to dropping a bouncy-ball with a bit of spin. If you try that, you'll see the ball bounces back and forth, and that the spin changes on each bounce. As the ball reaches the floor, the rubber grips the floor and so stays where it is (the boundary condition mentioned at the start of the video but with air). However, the ball still wants to rotate so a torque is applied that twists the ball. This twist is essentially elastic energy which releases, causing the ball to spin in the opposite direction.
My suspicion is that a similar thing is happening in table tennis, but that the deformation is to the rubber on the paddle. As the bat moves across the path of the ball, some of the rubber gets dragged back and stretched out. This energy is then released into the ball, causing it to spin.
Another thing it's similar to is the hockey shots in some of Destin's other videos, where the stick hits the ice before the puck and gets deformed, before unbending and slinging the puck across the ice.
andymcl92 for sure. Seeing it would be interesting. There is a lot happening with spin received and spin given off the loop, and the relationship between the paddle angle and the moment of contact, and it’s relation to its trajectory off the table. To react in time to make a successful return has a lot going on
@@paulzeee And yet it's one of those skills that we develop an intuition for without a deep understanding of the physics involved!
But as I always tell people, it's all in your feet!
its called the magnus effect, look it up.
I'm nerding out so hard on this video! Awesome work Destin! All your videos are beyond incredible, but this one was super on point!
I did say "nerding out SO HARD" so that should be self explanatory.
Seriously, this is publishable stuff. So cool to see you doing cutting-edge science. *fistbump*
when you do this, there isn't a better channel out there! Fascinating and counter-intuitive!
0:33 really thought he was gonna say “sadism”
Lmao I thought that too
Maybe she should explore that too. Despite not being attracted to girls, I have huge respect for powerful doms like that. Heh.
Lmaoooooo
Yo that s&m joke is gold
Your child like enthusiasm for the simple things in life is contagious. Lol. I love your videos.
And he shows that there aren't actually simple things.
@@GunFunZS The simple things I was talking about was the toy guns being in synch at the end. But yeah... even on big complicated concepts he's good at breaking it down for idiots like me to get it.
I think a lot of us have child-like enthusiasm for the simple things, his video views and subscriber count reflect this fact, but there's not many people that can chase them the way Destin does, not everyone carries a multi-thousand dollar high speed camera everywhere or have plentiful resources of space, equipment and contacts willing to help. Destin is lucky that he's got all of that, plus the education and time and willingness to present and broadcast his work to the whole world that continue to make this possible (even that alone I wouldn't be able to do) so to have someone like Destin do this for us is certainly a special thing indeed.
3:09 Is the best thing ever. 2 Engineers just so excited they cannot contain themselves. Beautiful!
Undergrad Physics classes in 2007 were teaching about this. Essentially the tension on the string approaches infinity as the wave tries to propagate but doesn't have any more length to propagate into, resulting in a massive acceleration.
The total energy transferred from the arm to the whip and from the whip to the tip and from the tip to the air is mostly constant (deprecating the friction loses) and the only way to keep that energy when the whip is fully elongated is to concentrate all that energy in the rotational momentum of the final millimeters of the whip tip, the only way that momentum to concentrate that amount of energy is rotate so fast that remaining section of the tip breaks the supersonic speed and creates the shock waves.
This is a cool video!
I added this to my video Hall of Fame playlist. Absolutely brilliant work. Fun to watch, easy to digest, and very interesting overall.
Best award ever. "Hey guys that Nobel prize is nice, but are you in the ChubbyChub Hall of Fame?"
This guy would be the best physics teacher.
He is
@@eliasjosephsson3994 he isnt a teacher
@@yinyang1217 He's Teaching Us, therefore-- Teacher: One who teaches...
@@scottcrawford3745 teacher is a fcking job
@@yinyang1217 it is his job
just make sure to include the part that almost anything can be used as a whip so the dynamics must work even if the weight and length doesn't decrease further along. So cool!
Please post the DOI when the paper is finished because you should totally publish this!
Love the video!
9:23 to BREAKTHESPEEDOF SPOUND
@Trip Gil s = curvy 5
4:56
Her Father : Mechanics expert
Her Brother : Aerodynamic expert
Her Ex : Aerodynamics ATOM expert
The girl I like : Hot whipping Asian
ME : Just learning stuff
:D that meme is still funny man lol
aimanseymos
Ain’t that the truth!
It's a dude
@@Biffmester - Sounds very much like one. Pass...
Its a man?! Hol up
Videos like this are the reason I decided to finally go to college at 23 for Computer Science, people may make fun of science at school and it may be dry material but the payoffs in applying science are unparalleled
This is literally the best advertisement for Audible i've seen. Very very convincing.
Read Skunk Works.
ikr? inserting bits of info while advertising instead of the usual pure advert after all the content of the vid. Genius!
I just watched a video starring a pretty lady with a whip.
It was about science.
Mikosch2 Bruh... I doubt that...
its tgirl i think
Kinky
@Mikosch2 No, you didn't. Trust me.
Mistress at least.
_"Ok, now would be a good time to explain April..."_
I was expecting leathers and thigh-highs, but got Lagrangian frameworks instead :-\
@PathOfPirate i have two thoughts on this but why am i getting the "bad" thought....
F
@@shiv7978 i don't know about "girl"
Why isn't anyone talking about how he literally discovered a new way to analyze Whip cracking? Literally the first person in HISTORY?? All for a TH-cam channel???
Cause it’s not true this stuff was all known already. This is a youtube channel
@@pancouvervenguins8573 you can literally see him doing the experiments and he cites prior knowledge in the field and builds on it?
@@pancouvervenguins8573 just because he’s a TH-camr doesn’t mean he doesn’t have experience in the field, his entire channel is about his scientific experiences and experiments, he’s just putting it on TH-cam because it’s a good way to publish and make money doing it
@@rolandcaters7258 yeah they’re actual scientists doing experiments. But you’re crazy if you think no one has done a slow motion video of a whip before. the technology has existed for a while. it’s not like they made an amazing new discovery
@@pancouvervenguins8573 well yes, but it is unlikely someone before used all the imaging techniques currently available and used in this video, which is more than just slow motion. It’s entirely possible it’s been done before, I will admit that, however he is still doing the experiments himself
The whip tip accelerates after the shock wave for the same reason rocket exhaust accelerates after it passes through the throat of the rocket engine and become supersonic. Once the flow becomes supersonic there can be zero pressure(by definition) against the direction of the flow. The air particles are pushed into what, to them, behaves like a instantaneous vacuum as any particles in front of them are moving away from them at supersonic speed. In the case of the whip tip there is a small pocket of what is essentially vacuum just behind the shock wave and the whip gets pushed into this by air pressure.
@Tom JLB: Interesting: what you’re describing, resembles what Aristotle postulated about projectiles soaring through air.
Namely, he believed there was only linear motion on Earth, and that an earthy or watery object (this includes metals, wood ...) would always move towards the Earth, and in linear fashion. Therefore, a projectile (say, a wooden arrow, or rock ...) flying in a parabolic trajectory seemed inexplicable, so to solve the problem, he devised that the projectile itself wanted to move downwards, but was thrusted upwards due to air rushing into pockets of vacuum left by the projectile behind it. This would gradually die off, as the process wasn’t 100% efficient.
Applied to a whip, his theory is the exact opposite of what you’re saying happens; fascinating!
Source: Wrote a 40-to-50-page paper on Aristotelian physics as final project in high school.
If you had a popcorn kernel on the end of a whip or hit by it would it pop from the impact?
Haven't I seen you on elitepvpers?
No, that's got nothing to do with how popcorn works
TheBetterGame
we won't know untill we try
TheBetterGame Well, if heat is just moving particles and the ability to break the soundbarrier is due to something moving faster than sound travels then why couldn't it work? Popcorn pops due due the trapped water inside turning into steam via heat. So, what are the limitations of thermal energy here? What is the shortest time required to make a popcorn pop?
Are you really sure it can't be done?
@@KyuubiSam
There's different ways something can heat up. It isn't as simple as something moving very fast.
When it comes to popcorn, the water inside needs to be excited. Unless I'm mistaken, that happens when a heat source constantly bombards the kernel. Moving very fast cause heat through friction and rapid pressure change, not rapid energy bombardment. Unless I'm missing something, I doubt fast movement will make popcorn.
My fellow spaghetti eaters know aalllllll about this.
Schluuuuuuuuuuuurp... SMACK!
*That's* why it is virtually impossible to eat spaghetti and keep a clean shirt!
Now I want spaghetti and Texas Toast brand garlic bread!
But can you break the speed of sound with spaghetti?
And don't forget the safty glasses! ;)
That's racist.
I love watching your older stuff and hearing you recommend books that I have already read. We have very similar interests.
Skunkworks is one of my favorite books. It is not only an interesting story of the U2 and SR-71, but it is also a master class in project management and overcoming unexpected challenges.
Totally, i read it in grad school 20 years ago. I was MEZMERIZED
They had to make it out of titanium which was only found in Russia at the time so they had to figure out how to get enough titanium from Russia into the states without Russia knowing what they were up to. Also, due to the heat they had to purposely make the panel's so they didn't mesh together because the metal would expand when it heated up causing the panels to fit properly in flight. Essentially when the jet was on the ground it was very loosely fit together to the point where the jet would leak fuel all over the runway before takeoff.
You're talking about the SR-71, out of context - But why?
@@GaminGit You didn't catch the audible commercial where he mentioned it near the end of the vid? I just felt like throwing out some random info. It's the interwebs you can do that. 😉
So, in short, the answer to your question is simply, because....
Possibly a myth. Naturally, this is the common explanation, and as classified as the tech is there is no way to be sure...
But SpaceX is using similar tech to intentionally leak fuel across the body of the craft for cooling. This makes a lot more sense to me than engineers not knowing what a flexible seal is, especially since heat is by far the biggest concern.
The leaking may have been intentional to cool the craft with the easiest at-hand fluid: the top secret and curiously specialized rocket fuel.
DanGoodShot pewpew thank you for that explanation. The SR 71 is my favorite plane, but I couldn’t understand why it leaked.
And here I thought the leaking was to due to the metal sheets being slightly too small to give them room to expand from the heat that occurs at supersonic flight. The reason for this would be to achieve the best possible aerodynamics at the highest speed necessary.
I love at 4:54 how Destin says “Learning stuff”
Stay humble Destin 😂
Since the schleiren technique doesn't use the light reflecting off the whip, is it possible to set up two (or more) separate schleiren setups at different angles but focusing on the same point in space, then use photogrammetry software to create a 3D view of what's happening to the air density?
Interesting!
It's spelt Schlieren, ffs.!
@@Anvilshock BWAHAHAHAHAAAA 👿
Yes, it exists. Search for 3DBOS (3D Background Oriented Schlieren). It's pretty amazing.
@76Eliam Sweet! Thanks!
Love your channel so much. Just a simple TY.