Catching an Explosion in Water at 5 Million FPS - The Slow Mo Guys
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- เผยแพร่เมื่อ 6 ก.ค. 2022
- #PrimeVideoCreator Shaped charges are capable of smashing through a target at a speed of 10 Kilometres per second. Gav and Dan whip out the serious kit for this one. AD- Watch The Terminal List now on Prime Video: www.amazon.com/dp/B09HZ4BV5X
5 million frames per second played back at 25fps is the equivalent of slowing down 1 second of real time to over 2 days of playback.
Big thanks to the Colorado School of Mines for letting us back and for the use of their explosives and Shimadzu camera.
Catching an Explosion in Water at 5 Million FPS - The Slow Mo Guys - บันเทิง
That 5M frames shot was absolutely incredible. This is really something where you need exactly these kinds of cameras to see all the detail.
I was commenting on the Shimadzu HPV systems years ago on this channel.
Finally... they got one.
This shot was INSANE
I wonder how big of a hard drive is needed to capture such an insane frame rate.
@@TheBlargMarg Really not that big. They said it can only capture 256 frames at a time. The memory gets rewritten onto at a really fast rate.
Absolutely amazing!
Did we mention already how glad we are that Dan is back at it with his cool weapons and explosives expertise?
We love you Dan..
I haven't watched them in so long I'm like Holy lumberjack beard batman! Also Dan was gone?
agreed, and i like how they committed to the joke about dan digging a tunnel.
@@SaintShion During Covid lockdown yeah
Gavin and Dan are like... teaching ultimate chaos how to harness itself safely- and then choosing to use that chaos for pure fun
@@SaintShion yep, Dan still lives in England but Gav lives in Texas
The inversion of the 5 million fps shot is absolutely insane. That’s actually one of the coolest things i’ve seen on youtube
The mind is absent of light so imagination comes from the darkness master that simple Jedi mind trick and you can see the unseen which occurred at light speed
I love that Dan just knows all these things. It's refreshing to hear someone lay down so much knowledge I don't know about
he used to be a military explosives expert. so he knows more than many who only study the theoretical side lol 😊
@@ldkmelon Then his training is not that good, the second charge didn't exploded because he placed the detonator incorrectly.
@@teresashinkansen9402 I don't know whether what the other guy said is true or not but people make mistakes. That's kinda the thing about humans. You can be the greatest expert at something and still make stupid mistakes from time to time because people aren't robots.
@@teresashinkansen9402 Does it quell your jealousy to point that out? You realize they left that failure in? People who own their mistakes are far better than those who hide them.
@@skepticalbadger So they left a mistake and because of that they cannot be criticized? If they are really owning to their mistakes should also be able to take criticism so I don't understand why you point that out, it becomes somewhat ironic. Why I should feel jealousy of such incompetence? it is basic knowledge within the industry and the military (demolition experts) about how the detonation train of a detonator works, it is very important to know this to safely set up charges and avoid misfires, here is not a big deal but in other circumstances could mean something serious like a demolition not going according to plan because an incorrectly placed blasting cap. Is like changing electrical fuses but using an incorrectly rated one, its just so basic, but then because I point that out it means Im feeling jealousy? that's just silly, aren't you projecting? not everyone criticizes due jealousy.
That 100k water shot was actually incredible. The cavitation wave behind the shockwave, the black tendril climbing down the core, and the thick cracks chasing behind
I'm so glad you made this comment. I was worried they wouldn't notice or mention the cavitation due to the extreme pressure. that's so cool 🥰
@@Battlefox64_RL I think they mentioned cavitation exactly once. Just past 17:40
Was it the shock wave or the cavitation wave that shattered the tube?
@@benkayvfalsifier3817 The shockwave caused the structural failure. Cavitation, by definition in this sense, is an outward process, caused by the shockwave. The shockwave refers specifically to the G forces that traveled through the water, and that also caused the tube to shatter.
That 5M FPS shot was phenomenal…wow, this may be footage never seen before. What a sick video
May be?
It felt like we were watching forbidden footage of the universe.
@@DreadEnder yes oscar, may be
It took me several minutes to get my jaw back up after that.
play at .25 speed ftw
I’d argue that the 5M shot is one of their best shots of all time. Even the fastest shots they’ve had didn’t show much. This shows everything, including exactly how the explosive worked. Fantastic
The prediction of 15:14 is really showing that Dan is experienced. He's enough of an expert to admit what he doesn't know.
Hey, it's insane to realize that the speed of light is 3×10^8 m/s, or 30 cm/ns, meaning that with the 5 million FPS footing you could start to see the effects of the speed of light limit.
You could actually build something to observe this effect. For example an array of mirrors at different positions, all reflecting the image of a unique explosive charge toward the camera. The image of the explosion would then appear at different times in the different mirrors due to the limit of the speed of light.
Bruh im not even that smart
My friend; they've already caught the speed of light in action on camera. :D th-cam.com/video/7Ys_yKGNFRQ/w-d-xo.html "Filming the Speed of Light at 10 Trillion FPS", Planet Slow Mo, Season 1, Episode 10, Part 1.
How many frames per second would they need to turn on a flashlight or laser pointer and be able to see the light travel away from the source?
@@DennisKovacich Well, you would need something to refract that light to get it back to the camera, and they've got a video on that already. Not sure on the absolute minimum number of frames, but, 100 *BILLION* frames per second is able to see light travel through/across stuff.
Yess!
With 5M fps and mirrors 30 meters apart I believe the light would catch the camera 1 frame apart aswell.
Would love to see that
The part that fascinated me most happened with the "plate plates". With each of the first few plates there clearly is a reduction of the pace at which the copper is progressing through the ceramic. But, as each plate is penetrated, pressure captured in the shock wave progressing from the previous penetration re-accelerates the material. That was completely unintuitive. It was as though a kind of shock tunnel had been set up, contained only by the air around the column of plasma and copper.
It bottle necks in each plate making the thickness of the plate act as a mini gun barrel kinda
Always love videos with explosives as Dan gets to flex the knowledge he learned in the army. Really cool episode.
That cone inversion is one of the coolest things I've ever seen, no joke. I've known about how the physics of shaped charges worked in detail for many years but there is no substitute for really seeing it happen!
Big fan of shaped charges too so that footage was gravy. 8D
first time in years that i let out a audible "wooow".
Try setting the playback at 0.25x speed play from 13:55 and enjoy, Dan says "million" just as the cone starts to light up its freakin awesome.
I came right over to say how amazing the 5,000,000 fps shots were and wouldn’t ya know, I’m not alone. Hmmpf.
Set it to 0.25x speed and you've got the equivalent of 20 million fps!
Interesting note: The SPACE between impact layers has been proven to be extremely effective in stopping stupidly fast impacts, as the space allows the shrapnel and debris to spread, effectively absorbing the kinetic energy of the projectile with each additional layer. This is, in fact, so effective in impact protection that a variant of this idea is used to stop micrometeorites from penetrating spaceships, something known as a Whipple Shield.
Yeah so the first impact breaks larger projectile up into smaller pieces with more air resistance per mass. I mean that still wouldn’t make two 1 inch plates with 3in space between more effective that 5 inches of solid material, but 2 1-inch plates with space are much better than a 2 inch plate, and clearly cheaper, especially considering it’s expensive to send stuff to space.
Armored vehicles use this as well sometimes as AT rockets/missiles use this same principle to pierce armor. The "cage" armor you see is designed to either detonate the warhead farther away from the armor or if the fuse misses the slats it will break apart a portion of the cone shaped charge and it won't be a proper cone shape when it detonates. Another cool method is using ERA, or explosive reactive armor, where explosives are sandwiched between steel plates and when the shaped charge detonates, it detonates the explosive filler between the plates and effectively pushes back against the copper jet and hopefully dampen it or redirect it.
Pog
@@seicbro9459 Would also be a lot lighter
that's really cool
SlowMoGuys still nailing it every video ! These guys have been consistently on point for so many years now !
The fluid dynamics of a shaped charge I can visualized in my head, but seeing it is truly amazing
Sometimes we forget Dan was literally a military munitions expert... I'm so glad he was!
Was? He still is. :)
@ He left the military a few years ago, didn't he? Although he's probably still certified to handle weapons and explosives in some way.
When he talks about something he have knowledge of in pure confidence is like a different person!
For an 'expert' he doesn't know much about shaped charges..
@@N4CR5 People overestimate how much the military teaches you. They're more concerned that you know what to use and how to use it safely than they are teaching you the physics and mechanics.
it's easy to forget Dan's a Marine with lethal combat skills and knowledge cause he's so chill
He wasnt a bootneck, he was an ammo tech.
he's british lol
@@catlee8064 So? He still received combat training
@@arbiter- are you under the impression that other countries don't have marines?
@@nonimport-ante not called marines but sure they have an equivalent
I love how you guys know exactly what we want. Never had to rewind cuz u guys did it for us like 10 times that was perfect.
These aren't just The Slo Mo Guys, they are the KINGS of the Slo Mo Guys! Impressive footage to say the least!
Glad they let you boys back! More mental slow-mo for us! Not to mention what a pleasure it is to watch Dan show his expertise
whenever dan gets to talk about weapons and explosives it's a good video
I came here to make this comment :P Glad that no one lost a job after the last enthusiastic show.
@@brianbarrett2487 what happened?
Definitely. It's been too long since we got a new video.
You know... TH-cam has it's faults and flaws, but I'm really glad that they provide a platform for people like you guys to shine. You guys rock! 💙
You have flaws too but I'ma not glad you are here.
@@donaldhoot7741 get a life
@@donaldhoot7741 mf in his feelings, can't get a girlfriend mate?
What a couple of Lads
@@donaldhoot7741 are you okay?
16:55 pause when the shockwave is roughly at 2/3rds of the way down, that's an album cover right there wow!
When Gav said “thats the cream”. In my opinion what they have there is the holy grail of slow motion so far that shot was breathtaking
It's hilarious following Gavin throught the years doing and saying so many stupid things, then seeing him being a complete expert in operating like $100k advanced slow motion cameras...and then it's back with him using a rock to hammer a screwdriver into a plank...lmao
That phantom is way more then 100k lmfao
Seeing that rock/hammer combo made me laugh.
Reminded me of all the times they made jokes about never having the proper equipment
As a former Army Combat Engineer, I too was in awe at these shaped charge slo-mos, especially capturing the copper inversion. You guys are truly what 4KTV was made for!
(And yes, Shout out to Colorado School of Mines, they are the best of the best!)
if this thing can do so much, i wonder what the little boy did in Heroshima was like 🤔
It's not copper inversion, it's copper collapsing
It's copper squirting from bang device.
@@jannejohansson3383 Copper compressed, melted, formed into an extremly hot jet of liquid metal, forced at preferably 90° onto a materialsurface. Basically a waterjetcutter exponentiated with the extreme temperature of the jet.
Indeed, a very shared opinion here. After actually finding a parking spot within a reasonable walking distance which is a supreme victory all in itself, I was overcome with the honor of actually being inside the school of mines bookstore. I was lucky to have escaped with the colorado geology paperback alone, but it was all I had on me to spend anyway. Today they offer many more states than they did then to be sure and the prices are higher of course, but the honor of standing there in person was ever present. I've also stood inside Uncle Milty's Tackle Box store back when it was thing and bought some repair gear for my 170 abu garcia which I could not believe actually existed and they actually had it right there. OMG, the drag starwheel, I must have it - how much is that part? eBay serves that function today and uncle milty is long gone.
14:25 You've just caught the Big Bang, well done guys.
Wild idea: Simultaneously fire two shaped charges that are pointing towards each other and film the impact!
You must be happy right about now eh?
I love how Dan gets excited talking about the explosives as Gav does talking about FPS. haha. love these videos.
I absolutely love when Dan gets to be the expert in a situation, he gets so excited and giddy but nerdy and informative
I could watch shape charges blow things up in slow motion all day
I cannot get enough of this shimadzu camera footage. I'm blown away. This is a whole new level for you guys.
The inversion of that shaped charge is one of the coolest things I've seen this year. Utterly incredible stuff.
Saaame. I love the ring of light following the inside of the cone before it actually inverts. Like something out of a sci fi movie
I ran out of ideas for slow mo vids years ago. YEARS ago. How y'all are STILL coming up with awesome stuff to film in slow mo is a testament to how amazing you both are and how great this channel is. One of the few channels I'll watch anything that shows up.
they can do the same thing every few years because things get slower every year
where we cant watch your videos ?
@Alexandra 😈 nope
Watching explosions at such a slow speed is amazing, and it just show how much power the shaped charges actually have.
that water tube blowing up looked like a piece of art. Beautiful.
These guys go through great lengths to entertain us, much appreciated!
And educate us
@Don't Read My Profile Photo Sorry didn't listen to you. But it's a pretty cool name
at 5 million fps you can visualize the light moving at about 60mts per frame.
you can make a video of a laser shot through a thin smoke on a field and actually se the laser beam develop. impressive.
(and if you put the camera behing the laser pointer the effect would be amplified because the light needs to bounce on the smoke particles before coming back.)
They gotta do this
I was going to say that the laser reflection wouldn’t be bright enough for such a short exposure time. But then I remembered there’s all kinds of pulsed lasers and that would be very bright, for just a few microseconds, and that would be perfect for filming. Maybe see if “styropyro” can get them set up with a pulse laser.
and then the laser goes through a big prism
mts isn't a unit
@@aluisious He meant meters
It's great to see you guys working together, you compliment each other perfectly in this show.
The 5 million fps shot is stunning. You both should be very proud
If anyone's curious about the 25 million Gs of acceleration explained at 6:50, this is how you calculate it. Dan explains that the copper jet accelerates to 10 km/s in about 40 microseconds - 40 millionths of a second - so the acceleration over this time is (velocity_delta/time_delta)/g where g is the gravity of Earth, or ~9.80665 m/(s²). In SI units 10 km/s is 10,000 m/s so the value is ((10,000 - 0) / (40 * 1e-6 - 0)) / 9.80655. This is approximately 25,492,905 or ~25.5 million Gs of acceleration.
Which is worth noting, that is the average acceleration over that 40 microseconds. Any deviation means there must be lower and higher values of the acceleration within that delta-t. So that average is also a minimum. It experienced at least that much acceleration.
@@seanehle8323 How can you be sure that the average is a minimum?
@@cxpKSip 25mil G's is the average force applied over the course of 40 microseconds. If the initial lateral G force is 0 because the charge is stationary, then in order to get an average of 25mil G's, there would have to be a value higher than 25mil at some point. Therefore we can say that the highest g force on the accelerating copper was AT LEAST 25mil G's. The minimum being referenced is the minimum highest G force within that 40 microseconds.
@@cxpKSip He meant the average speed is the minimum maximum speed. The maximum speed can not be lower then the average, but it's likely that the maximum speed actually exceeded the average at some point, because if it didn't it would mean that there was no accelleration and the speed has been constant over the timeframe.
This is above my level of comprehension
I love videos like this where Dan also gets to flex his expertise, makes it feel a lot like Mythbusters where you have 2 similar but different experts combining their knowledge resulting in a absolutely terrific product
This channel has to be the #1 for satisfaction and the desire to want more in one sitting. Love it.
I really never thought I'd think explosions were this beautiful, but they really are
videos like THESE are the reason cable television is literally archaic technology these days.... absolutely phenomenal content, all for free.... you guys really are the best on the platform in terms of consistent/quality entertainment!
You didn't see any ads?
@@BariumCobaltNitrog3n I also didn't see any ads
Nope none, did they not monetise this?
@@elzar5987 I guess not.
9:36, Those are Fiestaware plates aren't they?
This was epic to watch. The sound editing is on point and the low rumble, my gosh...no words do it justice
Gav’s beard is making the duo look more and more like Rhett and Link
I absolutely love how Gavin is all about how aesthetic a shot is. He notices the intracacies of objects within a shot. I love Dans' expertise in the more, 😏 "explody things". The humor and dedication this channel has is top tier. Love ya SloMo
Gav's beard is a thing of beauty.
It is great how Dan, while being goofy and funny, takes the actual detonation process so seriously.
Looks like a lumberjack
@@josephdolman Or, maybe, a Lighthouseman?
@@euansmith3699 maybe but I could definitely see him in flannel out in the woods with an axe
Haha at first sight I was like oh how odd looking. As long as he likes it that's all that matters.
@@josephdolman Remaking "Tucker and Dale vs Evil", as "Gav and Dan vs Evil... In Super Slooooooooooooooooo-mooooooooo"? 😆
It's like watching a comet punching through an atmosphere.
Your guys videos are just amazing every time a new one comes out and I catch it, I do what I call “going on a binge with Gavin and Dan”. I pour myself a big glass of spiced rum on the rocks and set myself down in front of my screen and watch an hour, two, or three of your videos, just happy as a baby mothers arms.
Once again, so glad you two are back together. I really enjoy when you guys blow things up and Dan gets to talk about his expertise. It fun to see how excited he gets. And Gav the 5,000,000 fps shot was incredible. Thanks guys!
at what time stamp is the 5M fps, I scrolled through it all and nothing over 1M
I love watching these destructive slowmo shots. I would love to see a realistic miniature city with concrete and mini-rebar and all and see how a shape charge equivalent to a large bomb detonating somewhere in the fake city and see how the shock waves and all interact with the buildings and such. It couldnt be modeled out of any real cities of course but it is interesting science when no one is in any danger.
Great idea
The point of a shaped charge is it is a directed charge. It makes a hole in whatever it was pointed at, and does minimal damage elsewhere. You just want a regular explosive.
I saw a shaped charge used on the ground back in the 1970s. It made a hole about 12 feet deep, but only 2-3 feet wide. The other interesting thing about the hole was the complete lack of dirt anywhere. If you dig a hole that size, you wind up up a big pile of dirt next to it. This made a plume maybe 50' high, maybe even higher. The dirt all dissipated before it came back down.
As a military enthusiast that was absolutely stunning, never seen shaped charges like that
“Military enthusiast”
Your footage is getting better and better! 14:00 is most impressive!
Honestly love how much time and effort gavin and Dan put into this channel despite living a world away and having full time jobs ❤️
It's crazy that it's still so fast even at 1,000,000fps.
hands down my favorite video yall have done. shows off both of your strong suits and that first 5 mil fps shaped charge footage was mental
These videos are amazing, the amount of data that can be used to better understand the physics behind the charges and how to minimize wasted energy while possibly improving the charges themselves. I'm in awe of how much information you can actually see, even from the "not as good" clips there's still SO much information and data. Not to mention pure beauty in it.
No wonder they let you guys back, this is some top tier stuff. They can literally reverse the videos frame by frame, reconstruct the explosions in software, and use that data to better reinforce the points of the charges that wasted energy, while also being able to improve the defense against such charges. Absolutely astounding data.
As an EOD technician (and a full-time nerd) who uses shaped charges all the time, the videos you guys do with explosives are my all-time favorite
One thing that's worth noting is Dan definitely knows what he's talking about with military applications and explosives, since he served in the British Army as an explosives specialist (I think it's officially labeled EOD???), and if I'm not mistaken he made Corporal.
Isn’t EOD explosive ordnance disposal?
Professional thing exploder
11:00 a rock being used as a hammer by Gav who controls the high-tech, slo-mo cameras is very hilarious to me. gets even better when Dan using a hammer to hammer the screwdriver in.
I would 100% support a "Slo Mo Guys recreate old videos with the better cameras that now exist" series. So much of what you did years ago I want to see with the higher frame rates you now have access to.
OMG the old school glass breaking at 5mil fps... time stop!! mind blow!!
Love the beard!
For the half second where Dan wasn't present in the intro, I thought "Awwww Dan's gone again"
I was much sadder than I'd predicted I'd be
Hahaha same, I went through a roller coaster of emotions in that first second 😂
that water shot was epic, the end of it looked like the water compressed to the point of a singularity at the bottom of the tube as the charge kept pushing pressure into the tube. amazing shot.
I really enjoy how much "messing around" you did, like at 11:12 where you were just digging out pieces from a table to find out what they were, almost unedited. I love that stuff from longer videos like this.
At 5 million frames per second, light travels about 60 meters per frame. That's close to being able to be seen if you could get a light source that's bright enough and turns on quickly enough. Maybe a very bright high explosive?
Or some really bright laser and a tube like 120m long that light can travel through, would be interesting to see
They do capture light on camera in one of their videos :)
Or 45 meters if it's through water
loved seeing Gav's brain break when Dan was talking about the speed of the detonators at 6:53 right after he was casually dropping 1mill plus fps numbers
Anyone else think Dan looks ESPECIALLY good in this episode? I mean he's pretty fine anyway but he just looks so well and tidy in this episode. A pleasure to look at!
Honestly I love the way this channel periodically finds it's way into my recommended, just as I'm about to forget it exists.
Keep it up!
I was like oh no, Dan is gone...but then he showed up and my day got better
This video gives me mythbusters vibes and I’m here for it
Just dropping in to say I love your videos. Very informative and genuinely interesting. The high standard has not been lost despite huge success. Well done lads, and to all involved
I could totally be wrong about this but 17:31 looks really interesting because as they noted, the charge is coming out 29 times the speed of sound so you actually see the charge hit the water before the sound wave does. of course the water decelerates it super quickly and just about 8 inches or so after it hits the water the sound wave catches up. I just think it's cool to really see what it means for an object to go faster than sound.
The B&W footage was outstanding.
Seeing the 5-mil frame shot of the cone inversion was like watching a volcano going off. Absolutely beautiful! And that's just a measly little shaped charge! I imagine seeing the avalancher getting detonated underwater would make for some rather interesting footage.
That was absolutly incredible! The shot where you see right into the mouth of the shaped charge. Ive never seen anything like it in such details.
The 5M shot is my new favourite from you guys. Absolutely amazing!
Those tube shots are probably the most amazing slow mo I've ever seen in my life thank you guys.
Way to go on another terrific episode
Ever since that original video I have been so fascinated by shaped charges, I had heard of HEAT weapons and stuff but I had no idea the kind of physics that is used in the warhead to penetrate armour, then when Dan gave his explanation of what a shaped charge is, talking about the inverse jet etc I found it really interesting. Like I say, since then I've been thinking of what if the slow mo guys made a video about shaped charges, being able to see the jet form and penetrate things, so to see this video was insane. Seriously that 5 million FPS shot was mind blowing, that has to be never seen before footage of a shaped charge. I've seen computer simulations of them in ansys and things like that, but to see actual footage is crazy. What a treat!
I love that this video shows how effective spaced armour is on tanks, how it can set off the charge with too much standoff or disperse the jet through layers of armour. When you consider it, makes sense why javelin warheads have a two stage shaped charge system to make absolutely sure that the main big one can do its job. Thank you Gav & Dan!
The 5000000 fps shot of the cone was probably the coolest thing I've ever seen
This does illustrate Chobham armor. Ceramic layers, differential densities, and offset spacing, even by the wee bits. Yay. WIN.
I love how much footage you've accumulated at this point to where you can just go "remember how strong steel is?" and then cut to a video you took of a bullet destroying itself on a steel ball. incredible.
The detcord video is still one of my favorite videos you guys have done.
Ready for part 2. >=3
detcord in a pool of water
Im glad im not the only slow mo operator who attacks my remote trigger like that hahaha
I love Dan with his big ol' button and Gav with his little tiny one XD
I'm gonna say it. Best channel on TH-cam.
Always love a video where Dan gets to show his expertise
Knowing that this is a tiny shaped charge and still is this powerful makes me really want to see a tank's HEAT shell going off at these framerates.
That shot of the shape charge at 5 million is absolutely incredible.
That footage of the "smoke monster" going through the water may be my favourite footage you've ever captured.
not only am i glad that dan is back with his weapons and explosives knowledge, but dan also looks like he’s getting more cut recently. good on the mate.
My God. I've been watching you guys for years, but this has got to be the most insanely cool video you've done. One of the most interesting videos I've seen in my life. Just amazing.
Wow that 5m shot is incredible
For part 3 it'd be really interesting to see some linear shaped charges
This was absolutely fascinating! The 5M frames was incredible looking. To see how the charge goes off inside the cone was awesome!
Not gonna lie this vid is one of your guys' best, it feels like the perfect mix of lads having fun and informative and awesome visuals that just hook me in!
This is THE BEST video you guys have done yet! Just incredible. Thank you guys!
2 vids in under 2 weeks???
It's like Christmas in July!!