ฝัง
- เผยแพร่เมื่อ 25 ธ.ค. 2022
- Visit brilliant.org/scishow/ to get started learning STEM for free, and the first 200 people will get 20% off their annual premium subscription.
The bigger the electrical current, the more powerful the magnetic field. And we've learned to harness the power of those magnetic fields to do things like accelerate particles and suspend plasma!
Hosted by: Hank Green (he/him)
----------
Support SciShow by becoming a patron on Patreon: / scishow
----------
Huge thanks go to the following Patreon supporters for helping us keep SciShow free for everyone forever:
Matt Curls, Alisa Sherbow, Dr. Melvin Sanicas, Harrison Mills, Adam Brainard, Chris Peters, charles george, Piya Shedden, Alex Hackman, Christopher R, Boucher, Jeffrey Mckishen, Ash, Silas Emrys, Eric Jensen, Kevin Bealer, Jason A Saslow, Tom Mosner, Tomás Lagos González, Jacob, Christoph Schwanke, Sam Lutfi, Bryan Cloer
----------
Looking for SciShow elsewhere on the internet?
SciShow Tangents Podcast: scishow-tangents.simplecast.com/
TikTok: / scishow
Twitter: / scishow
Instagram: / thescishowfacebook: / scishow
#SciShow #science #education #learning #complexly
----------
Sources:
Iseult magnet
www.ncbi.nlm.nih.gov/pmc/arti...
www.cea.fr/english/Pages/News...
www.sciencedirect.com/science...
www.ncbi.nlm.nih.gov/pmc/arti...
MIT-CFS magnet
news.mit.edu/2021/MIT-CFS-maj...
www.energy.gov/science/doe-ex...
www.britannica.com/science/nu...
LHC magnet
www.home.cern/science/enginee...
www.lhc-closer.es/taking_a_cl...
SHMFF magnet
www.eurekalert.org/news-relea...
iopscience.iop.org/article/10...
nationalmaglab.org/about/magl...
www.mdpi.com/2312-7481/8/6/64...
www.science.org/doi/full/10.1...
UTokyo magnet
aip.scitation.org/doi/10.1063...
bigthink.com/hard-science/mag...
• Magnetic Field Record ...
Images:
commons.wikimedia.org/wiki/Fi...
• How Does an MRI Scan W...
news.mit.edu/2021/MIT-CFS-maj...
www.flickr.com/photos/eyestee...
cds.cern.ch/record/905940
home.cern/resources/image/acc...
commons.wikimedia.org/wiki/Fi...
cds.cern.ch/record/39304
commons.wikimedia.org/wiki/Fi...
www.home.cern/resources/video...
commons.wikimedia.org/wiki/Fi...
• Magnetic Field Record ...
www.u-tokyo.ac.jp/focus/en/pr...
Five Of The Most Powerful Magnets On Earth
Visit brilliant.org/scishow/ to get started learning STEM for free, and the first 200 people will get 20% off their annual premium subscription.
* metric tonne. There is no such thing as "metric ton". It is ALWAYS spelled "tonne" when you are referring to the metric weight.
What's 20% off free?
How large of an asteroid could this 25-Tesla magnet protect from radiation, as well as Earth's magnetic field?
@@greensteve9307p]]ppp
I liked how you did everything you could to avoid saying the words "Flux" and "Capacitor" together. Impressive.
😅
We do what we can.
Oh yea, another bad joke they skipped.
I'm even more disappointed now. This is usually a good place for bad jokes/puns.
@@ChrispyNut dang bro, you really upset about that huh😂
@@THATDAMNEDGAMERDoesStuff Devestated, Bruv. If I gave two hoots about "Christmas", this woulda ruined the whole thing for me.
It's certainly ruined the year. 😏
I’m more impressed that someone was like “hey what if we use a big magnet to align people’s protons”
I want to know how strong a magnet needs to be to rip those protons out of people.
To this day Dr. Evil is still irate that his brilliant idea was stolen in order to make medical devices that help save lives.
@@foty8679 Before that happens, electron orbits get disrupted which causes molecules to break apart. You'd be torn to shreds, and then the electrons are stripped from the protons altogether, and then you rush towards the magnetar that you somehow got too close to.
It started out with NMR spectroscopy in the 60s. It was useful to determine the structures of organic structures. Eventually someone realized that you could do three-dimensional NMR with a tracer, and with some complicated math, turn that into an image.
@@LeviathanStormPrince thanks for the explanation
I remember studying for exams we take at 16 in my country and at the time 3-4T was considered absurdly strong. Starting off with 11T really sent home how far this one niche has come in just a decade or two
I mean, 3-4T IS absurdly strong. We just tend to redefine "absurd" every few years. Reminder that Earth's magnetic pull is ~0.0005T (give or take a 0. Might be miscounting)
12:49 "So that explosion was actually a sign of great progress!"
What an amazing sentence.
That was what they said about the A bomb
Achievement unlocked: proton bomb
I'll make a note here: huge success.
What is a fission bomb but a volatile Nuclear reactor
Krogan scientists approve
The first magnet, ISEULT is located in the CEA near Paris, where I work. I work I a completely different field so it's cool to see a bit about the other sorts of things that happen in the centre.
How bad is the chemical shift on an 11T magnet? Have you seen any of the images?
@@Markusthurmanius I have to admit, I have no idea, when I say I work in a different field, I mean a completely different field. The CEA is huge and contains loads of labs with so many research topics going on at once. I work in archaeological science.
So cool!
I too, work in a non-magnetic field.
@@jackaw1197 This comment needs many more likes.
I really liked how detailed you explained the actual purpose of those magnets
love your videos in general, but this one was outstandingly interesting!
The team worked super hard on this one!!
@@SciShow Oh come on, be honest Hank - your team works super hard on _everything_ you guys produce!!
From personal experience, dont wear tight polyester clothes in an mri..... not a fun time
@@joehelland1635 what happened?
The best fabrics to wear inside an mri device is considered cotton, polyester, and wool.
But some clothes might be mislabeled and contain some metallic threads which can cause burns, and some heat-retardant fabrics can trap heat and sweat causing a burning sensation
@@AltonV i wonder too
I'm a bit sad that you didn't mention the magnets used to separate Uranium-235 from Uranium-238 during the Manhattan Project. When they flipped them on for the first time, they ended up ripping out some of the giant fasteners holding together the steel beam structure of the warehouse they were in.
I'd be in favour of an additional video taking about that
@@Stettafire I wrote a research paper on the Manhattan Project for a war history class in college. It was absolutely fascinating. It was 28 pages and I feel like I barely scratched the surface. It could easily become an entire series if they wanted it to.
@@whistlinturbo get The Making of the Atomic Bomb - by Richard Rhodes, this is full story, better that most movies
@@dexterPL I am pretty excited for the Oppenheimer movie this year, the trailer looks pretty good.
Yup calutron magnets. The wire used in these was made of silver so they worked better, but that was not the reason. World war 2 valued copper for making brass for cartridge casings.🤔🤓❤
My dad designed MRI machines for 25 years, up to 7T. He was so glad to not be in charge of keeping the liquid helium in the coils since it's a superfluid
What about the 36 Tesla magnet that was made by Superpower Inc about 10 years ago?
I bet there are some interesting engineering issues dealing with super-fluids in a commercial application
In my head there's some sort of inside joke behind 7T and that sort of stuff is, like, my favorite thing on Earth :)
@@michaellashansky9471 It would be _overkill_ for an MRI.
@@michaellashansky9471 What about it??
This is Ironman greatest enemy
I thought it was alcoholism
Seawater
Agree. Especially with nanotechnology because it's a lot smaller.
Iron Man actually does have non-magnetic armor made of carbon fiber, ultra-hard ceramics, and plastics. Turns out when you exist in the same universe as Magneto, it's smart to invest in tools against powerful magnetic forces
Iron man had a non magnetic alloy of gold and titanium...
I like how we can just casually create, configure, and destroy very important magnetics fields at any point we want.
I'm one of many millions, but thank you for the great video. This maybe not my field of experience, but none the less just learning more has always been a goal of mine which I have to say this video brought new light to just how important magnets are and what they can be used for/use.
If/When you do an episode on fusion, will you look into Helion's method as well as the tokamaks please?
Oh yeah...though Real Engineering's video really hit it out of the park already!
@@SciShow True
That actually came to mind during this video, when talking about the LHC. Was thinking they seemed to get those gasses up to speed in a [relatively] REALLY short chamber, but then I realized I couldn't recall the speeds they claimed.
@@ChrispyNut I seem to recall mach 3, but I could be way off.
@@SciShow maybe worth a mention of their electro-magnetic flux compression literally resulting in fusion... but instead of a rigid container exploding, they capture the outward pressure release in their electro-magnet coils as electricity?
This direct conversion from electricity to fusion energy release and back to electricity using magnetic fields is reminiscent of Tesla's experiments ~130 years ago (with mechanical motion in place of the fusion)!
Some years ago, I toured the imaging department at Oregon Health and Science University. They have a 12 Tesla MRI, but it is only large enough scan a rat.
Or a disembodied brain. Just sayin'.
I have an uncle who researched from MIT at Cern and led a group. Therefore, I was allowed to visit Cern and went for a walk in the ring and stood in front of the huge magnets that measure the collision of the particles. It was very special.
defintley one of your best videos recently thank you guys for continuing to produce amazing boundary pushing content!
I love how excited Hank gets about science.
Today I learned that Doc Brown was actually onto something back in the 1980s.
I love scishow so much! Especially Hank’s episodes. This was so interesting!
I watched you and your brother in years and continue to do so today. I think that speaks volumes
So interesting! I was thinking that the magnets of MRI machines had something to do with the iron of the red blood cells but that was as far as I went with that. Knew nothing about them needed to be cold. Hmmm...
The iron in your blood is nonmagnetic.
If it was, we couldn't be in the room with one, much less inside.
Interestingly the iron in blood is not ferromagnetic so you won't have blood suddenly sucked out when you go near a very strong magnet.
@@puckelberry
So you're claiming iron in blood is actually magnetic, just not ferromagnetic....
THAT'S wrong.
As I said in my previous post, iron in blood is nonmagnetic.
There's more than one kind of magnetism, blood isn't magnetic at all.
If it was electromagnetic, we still couldn't go in the room with an MRI.
If the iron in your blood was paramagnetic, instead of being ripped out towards the MRI, the iron in blood would be shoved out the side of your body facing away from the MRI.
If the iron was electromagnetic, it would still be ripped out as if it was ferromagnetic.
Iron in blood is NON-magnetic.
I never said it was magnetic. It's not at all, but when we reassure patients going through the mri we always just say ferromagnetic so that was the word I used
I've always wondered, if you took a permanent magnet and stuck it on the ceiling, will it eventually weaken and fall as it uses energy to resist Earth's gravity? How long would that take?
A long long time I believe
🤯🤯🤯
they have a half-life of 700 years, so after 700 years they'll be half the strength
You should start this experiment today. Please have one of your great-great-great-great-great-great-great-grand children come back here and post the results.
It doesn't need energy to resist earth's gravity, the same way that your cieling paint doesn't. Energy needs motion in order to transfer. Though as others have said, all magnets are temporary so eventually it would fall
I love how a few thousand years ago we were smashing rocks together just to see what would happen, and now we're smashing protons together at the speed of light for the same reason.
What a really fascinating presentation. You set the bar really high!
Innteresting and well made video. Thanks for making it
This is inspiring & rekindling my interest in physics. Thanks!!
I think this is a field that could benefit from color mapping. If you assign a color to each point on a torus with some kind of function, you get different colors on the surface. You can do different functions and mess around. You can do or even just a sum with a gradient scheme.
Oooo I'd love to program a display for something like this, I've worked on projects before converting data into colored 2d maps from ultrasound devices, it is super fun
So Tokyo made a Flux Capacitor? So does it make a doomsday device or time travel possible?
Perhaps time travel, but you'd have to pass through the ring at minimum diameter!😜
@@icollectstories5702 right, cause you never really know which. Depending on the story universe it's always one or the other or both. I think if you don't get the ring right it goes unstable, explodes, causes "the fall", and become the catalyst of the super high tech magical anime society...because still Japan.
It has to reach 88 mph first ;)
@@icollectstories5702 No time travel, there was always less toilet paper on the roll afterwards.
I'm happy with the N52 magnets I've bought.
They are hard enough to separate that anything stronger would be impractial for my purposes.
But none of my papers have fallen from the ceiling in my pickup!
Best condensed description of the LHC I've heard!!
Very cool! Magnetism, electricity and science in general is fascinating.
I like when they compress quarters using a similar setup as the electromagnetic flux-compression magnet
Putting quarters on a train track is MUCH more effective, and WAY easier... 🤔
I loved this episode! Thank you for putting so much effort into creating this one, jeez magnets are fascinating, seems like we’re on the cusp of some breakthrough technology!
Such an incredible way of explaining the concepts of MRI!
Outstanding Video.
Superior educational experience.
I worked at Delco Remy Division of GM in Anderson, Indiana when Dr. John Croat invented the Neodymium-Iron-Boron magnet. I actually got to know him well. This was the so-called Magnequench rare-earth magnet. Later, I was trying to develop an injection moldable grade of powder for them. After I retired, Magnequench was sold to the Chinese. A man named Joe Lehman built and managed the first GM Magnequench plant in Anderson, Indiana. FYI - Magne (big) + quench (cool). If I remember right it was over a million degrees per second. You were never a genuine MQ engineer until you got your first "finger between magnets" blister. Those suckers were unbelievable.
"Blister"? Today there are magnets small enough to handle that would CRUSH the bones in your finger if they came together while your finger was between them.
@@davelowets Actually that was somewhat true back then. MQ was working on what they called MQ-1 only. But much more powerful MQ-2 and MQ-3 were in development by John Croat. He knew it could be done. John had a large 3D "model" on his desk which could be used for him to explain how all this worked. I was actually working with a lady in Kokomo, IN. who was once the head of all magnetics in Russia, She defected while on a trip. We were trying to produce an injection moldable grade. I was also working with Penn State on the same thing but she did not know it. I did not work directly for MQ. I worked with them. I was in a separate advanced development skunkworks at Indy. We were about to produce our first practical injection molded part when I retired. The idea was to show our customers what could be done, not compete against them.
This video opened a can of worms to me. I now have an extra 8 tabs on my browser just because I was having an enlightenment from the properties of higgs boson particle
share your findings after a peer reviewed process.
@@sethkeown5965 What I've found is that Higgs Boson particle is just evidence of the Higgs field (The filed where mass exist). So there's basically 2 fields (That I know of after looking into this topic) which are the electromagnetic field and the quarks field.
Before the Higgs Boson particle was found it was only theoriezed by Peter Higgs and his colleagues on 1964 that there's a field that corresponds to mass and the more a particle interacts with this field, the more mass it will have which is called the "Higgs Effect".
Now these elementary particles (The stuff that makes up atoms) usually have a spin and traits that makes an elementary particle different from other particles, and the Higgs boson particle is a certain particle that should have no spin nor traits as it is pure mass, and it decays into two muons.
The test didn't really find the Higgs particle, but they did find clues and evidence that it exist namely the two muons that it decays into.
Right now we assume that we have found the Higgs particle since we have traces of its existence, but we aren't fully sure if it really is from the Higgs Boson or if it's from a something else entirely.
I'm no physicist, I'm just a random dude who only spent a few hours looking into this topic which is why I cannot bring any credibility to my words. If you truly want to learn more, I highly suggest you go open this Pandora box yourself to see what's inside and what insights you could find.
@@rexroyulada6267 thanks!
@@sethkeown5965 No problem, good luck and have fun with your discoveries!
@@rexroyulada6267 I would note that there are many, *MANY* fields in nature. Just a short list, but:
• there are (17) base particles in the Standard Model,
• Gluons are actually (8) particles,
• while W bosons are actually 2.
• The photon field is actually 2 fields as well.
• Now, for every particle that has a separate anti-particle (most of them), you double the fields.
• Further, for every particle that has spin (most of them), you double the total number of fields, AGAIN.
• What about chirality?
• What about dark matter?
• Dark energy?
• What about GRAVITY at all?
And so many other possibilities.
"The explosion was a sign of great progress".... Now that's what I call science!! 😁
I am so grateful for the people who make up Scishow. ♥️
You're welcome
They don't make it up. They research it.
Video title should be “Japanese researchers create flux capacitor”
so the tokyo team basically just pulled a pistol shrimp move but with magnets, im pretty behind thats cool!
Man i wished more people would know the reference.
Super neat! I love electricity and magnets
DUDE THIS IS THE TRUTH THANK YOU SOOOO MUCH
12:33 looks like a scene in some sci-fi movie about scientific hubris, the part where scientists inadvertently summon a portal to the nether world
The violet flames really sell the otherworldly consequences.
0:07 - "There's something mesmerizing about watching an invisible force make two pieces of metal leap together..."
*Gravity:* "Am I a joke to you?"
Nicely explained.
Hank has one helluva magnetic personality!
4:32 I thought that was a polar bear.
It's funny, we are still, basically, smashing rocks together to see what happens.
And I think we always will be
Nice summary !! Thank you!
Your description of MRI was pretty spot on.
The more I learn about physics the more I sense that magnetism feels less like magic and gravity feels more like magic.
Magnets are easy to understand. At least I think I understand them. Gravity, not much. Most people think grabity is a force.
@@patrickhenigin4805 Gravity is one of the four fundamental forces if I’m not mistaken
@@patrickhenigin4805 But electromagantism IS magic, the electroweak theory is (wrong) "incomplete", so we don't truly understand magnets! Magic is something you can study to have a less wrong "understanding" of it, we have studied magnetism for at least more than 2.000 years.
But yes, gravity is more strange.
@@DuckDoolittle Not quite in our current "understanding".
That's only because science, in it's current form, is more belief and math than realistic and observable. Gravity is just a word, it doesn't exist, at best it is just a description of what is going on, it has never been an explanation for it. Electricity and magnetism are actual things that can be sensed and it's elements known if not understood. Nobody has ever found a graviton nor discovered how gravitic information is transferred nor even what it is. Maybe MAYBE it's all just electricity and magnetism? Science is run by sycophants and their forerunners have become saints. It's time to throw them out with their filthy bathwater.
It’s pretty crazy that having a super strong magnet realign all the spins of protons in all the atoms in your body has no damaging effect
Think of it like combing hair. The comb simply aligns all your hair in the same direction, without (in general) damaging the hairs themselves.
It's not a perfect analogy, but it's the best I could come up with.
I wonder what would happen if we rapidly switched the polarity of the magnetic field? Would we heat up like in a microwave? I mean fundamentally that's how a microwave oven works, taking advantage of the dipolar nature of water to rapidly 'jiggle' H₂O molecules. Expand the concept to all atoms... Is that what was happening in Logan's Run, I wonder.
11:53 - Wait… They changed the flux density with capacitors?
Did they go back in time?
Time is relative so... Maybe?
Always interesting, thank you.
Great Scott! This was good.
*Laughs in magnetar*
Ah! Yes, I have my ultra compressed star core right here in my backyard. I warn you, don't try to get too close, it tends to hug things very tightly...
@@williamdetempolivre the backyard scientist goin wild
Calm down Duarte
For when you want a magnetic field strength of yes
Wow. For others: apparently normal neutron stars have magnetic fields of 10^4 - 10^11 tesla, and magnetars have fields of 10^11 - 10^13 tesla.
You know what's crazy?🤔 The MIT Magnet and concept is kinda what Otto Octavious was doing in Spiderman 2. The arm apertures where essential containing the nuclear fission where there were spikes in energy. This is pretty cool. I want to make one 🤔
Not really even close to the same...
How so? The arm apertures act as the magnetic field. Support your argument. Or are you just saying no to say no
Thanks for your sharing
Thanks, this was a great episode.
-273K or Absolute Zero isn't the coldest temperature possible because it is impossible. You cannot stop the motion of atoms completely, because you'd then know their position and this would violate Heisenberg's uncertainty principle.
Yeah but that just means It's the mathematical limit and most laymen would just say the number at that point
The video is cool. Especially the forest adventure.
If you keep putting these sweet thank yous at the end, I will keep watching all the way til the end ♡
Fridge magnets have actually gone a long way recently, mine are neodymium and can reach up to 1 Tesla. It's incredible how fast the field is progressing.
...no you don't. You don't have 1/5 of an MRI machine to hang pictures on your fridge.
@@JohnSmith-kc6ov That's not how flux density works. If I could magically compress 7 neodymium magnets into the same volume then yes, but, you know, solid matter and all. They are, however, in the 10K Gauss range which is around 1 Tesla iirc.
@@JohnSmith-kc6ov Decided to double check, "Magnet strength chart" google search says neodymium magnets are 2000-5000 Gauss, so up to half of 1 Tesla. Fridge magnets are 100 Gauss, so 0.01 Tesla.
Magnets for fusion reactors is a very good thing hope we get that soon
They actually already did, its just not scalable yet. Heres a kind of deep dive into how: th-cam.com/video/_bDXXWQxK38/w-d-xo.html
Great Scott!! This is heavy doc.
I been watching videos on magnets and what not for a good while now for the past week. Just when you think you learned it all you learn some more holy cats that's awesome!!
i hope im not the only person that watched this and thought alchemy.
We live in a magical world
On this episode of WatchMojo we'll be counting down the five most powerful magnets in the world
Magnetism is super cool!
Thanks Hank and SciShow for a great episode. I think the study of magnetism will reveal gravity’s secrets. What if gravity is caused by a field or two, instead of a particle?
I am glad I came back to Sci Show
Protons in line for the movie; radio wave cuts in line: Proton: 'Hey what gives! Quit shoving!'
Doctor: 'It looks benign.'
Awesome episode. Does anyone know how to remove static from paper shredder bins, other than a wet cloth? Dumping it out in the winter is an fantastic way to witness electrical feilds but an annoying cleanup lol
Perhaps an anti-static gun? They spray ions which neutralize charge differences.
Wow! More expensive than I expected.
Put a dryer sheet in the bin. Static will be reduced, and it will smell nice too.
Polonium-210, or anything that emits nuclei.
I pick up the staticky object and repeatedly bump it into the nearest doorknob. It... kind of works.
Ground it? Like put some copper tape around the top, connect that to ground?
Lovin' it! Great video! Great work!
Curious what kind of magnet are we? Be generated 3 emfs from our brain heart and guts. Interestingly how every atom, organ, creature and even most planetary bodies have electro magnet Fields.
I love Dr.Rollin McCarthy work
I _think_ you inadvertently taught me what a flux capacitor is! It's an energy storage device that releases the energy in flux at the moment the time machine reaches a sufficient speed such that it won't simply be converted to pure energy. In this case _time_ is the flux within which the energy is squeeeezed through at subatomic levels along with (hopefully) the time machine! And Doc Brown's choice of a vehicle almost entirely made from stainless steel is the _perfect_ choice for such an operation! Eureka! I'm off to my garage...er, rather...my LAB! 😉
Magnets are like a MAGic NET for metals.
That's not why they're called that, but it should be.
But what is the Tesla sum of all the magents at CERN?
Yes
More than 3.
8T * 27km = 216 kilo-Newton per Amp...for what that's worth
@@DrDeuteron That doesn't equal the answer to the question..
@@davelowets what do you think a "Tesla sum" is?
WOW, what a production on such an advancement! I am floored (punny). With all seriousness aside, this is REAL StarTrek stuff.
10-Q, again
Respectfully, NHG
Really fascinating!
So the greatest magnetic flux we have ever created was made with capacitors. And it exploded. People built a flux capacitor and it exploded. Have we tried attaching it to a vehicle and accelerating it to 88 mph?
Someone call the insane clown posse , they're finally explaining how magnets work.🤣
Great Scott!!
I remember seeing a video on the exploding magnet on TH-cam years ago. That was epic.
I don't know if you guys already did a video like this or not, but if not, could you do a video about temperatures? It's always been a mystery to me why the lowest we can go is -273 but we can go millions of degrees in the plus for extremely hot temperatures. So how come it doesn't go both ways?
Because at absolute 0, motion stops. Temperature is largely just the motion of atoms, heat is the way we measure it. The real question might be why we are on the low end of the scale. Probably because, the further you go up, the quicker you get to the "Sh*ts on fire" point. Just like earth sits in the Goldilocks zone around the sun, life sits in the Goldilocks zone on the temperature scale.
charles' law says volume prop temp. Based on this, a slope can be extrapolated, and we will see the volume would reach 0 at -273.15C, which is impossible, so we cannot ever reach -273.15C. Anything lower, the volume would be negative, which is impossible.
@@MarkJones Yeah that's fair. The more heat the more the molecules move about.
On another note, you say life sits in the goldilocks zone of temperature, but that's human life. There's always the possibility that some life forms exist that can't live in temperatures lower than 1000°C for example
@@ASOTFAN16 In our scale we have critters that exist called 'Extremophiles'. They can survive/thrive in extreme (to us) conditions and temperature ranges. Even more so, when dealing with the higher ranges of temps in the universe. Life is tenacious, and will find a way to exist, and carry on. Like the wildlife on the ocean bottom that live clustered around volcanic vents that spew black smoke (hence, Black Smokers) continuously. That is some hot water!
@Betageek52 those extremophiles at the bottom of the ocean live in a high-pressure environment, not just high-temperature. Probably the high pressure allows for a normal volume to stay in a high-temperature medium. But I wonder if the temperature of the organisms themselves is just as high as the water's temperature. Also wonder if they would still be alive in a low-pressure - low-temperature (our normal) water?
How much energy do the capacitors at the University of Tokyo store and pump into the flux-compressor?
My guess is 1.21 Gigawatts.
A video on the study of minuscule magnetic fields would make great content (and a nice juxtaposition of this one). The idea that neurons create their own magnetic field is fascinating, some information on SQUIDs would be super interesting as their potential to detect magnetic fields as low as 5×10−14 (source wikipedia) completely encompasses the range of magnetic fields produced by organisms. Their (SQUIDs) usage in Magnetoencephalography as well as their use in oil prospecting, mineral exploration and earthquake detection I think would make for an amazing video at least in my opinion.
Magnets are cool, truly!
I get up to 6 MRIs every year to keep track of a few issues, mostly to check my ventricles that have an unfortunate history of being enlarged. Unfortunately, the MRI tends to make the setting on my shunt change since my shunt is programmable and is changed based on magnets.
So they finally did invent the "flux" capacitor. 😆 🤣
So does electromagnetic flux-compression mentioned at the end require a flux capacitor?
Great Scott!
2:45 When doing our waves unit in high school physics we took a tour of the MRI/Ultrasound lab at the university. The professor said that if you quickly stick your head into a 3+ tesla MRI it'll induce a current in your brain and make you hallucinate for a few seconds. I dunno if it's true but the way he told the story made it sound like it's something he does regularly for fun.
Considering how warm and fuzzy a regular MRI made my skin feel, I'm not sure if I even want to know how the Iseult MRI feels to go through! 😂
Edit: Before anyone else wants to go "hur hur placebo effect" I suggest you do some research. Skin warming during a scan is a known effect, and even the walls of the MRI tube measurably grow warmer during use.
you cannot feel an mri field. Probably just placebo
@@stinkiaapje Trust me, you really can. Definitely not a placebo effect, especially after 45 minutes inside an MRI. It's measurable, if not super common.
@@JustAnotherBuckyLover It is probably a placebo effect, there is no evidence to support that an MRI could make you feel "warm" or "fuzzy". However, if It is a contrast MRI, the contrast medium skin rash, dizziness, a headache, and nausea. They also could have given you something like fentanyl to aid relaxation or alleviate pain that could have made your skin feel fuzzy and warm. Also your own personal experience cannot be used as evidence to support your claim.
@@robotronixgaming2933 Johan S. van den Brink, "Thermal Effects Associated with RF Exposures in Diagnostic MRI: Overview of Existing and Emerging Concepts of Protection", Concepts in Magnetic Resonance Part B, Magnetic Resonance Engineering, vol. 2019, Article ID 9618680, 17 pages, 2019.
"Biophysical, immediate effects of MRI exposures are nausea and dizziness (vestibular unrest caused by interaction with the magnetic field), nerve and muscular stimulation by the switching gradients, and tissue heating by the radiofrequency pulses."
"Temperature effects from MRI exposures were established in the late 1980s of the previous century using volunteer experiments and thermophysiological modeling."
Even the FDA website mentions warming sensations. But tell me again how it's all placebo. 🙄
@@JustAnotherBuckyLoverThat's interesting, but the temperature difference that is caused is to small for your skin to detect. So unless you have ultra sensitive skin, you shouldn't be able to feel it. I will tell you again that it is placebo, because it probably is.
Wait... So the Flux Capacitor IS a real thing??? 😀
Cool. In the 80’s I told a friend the future was in magnets. Now I feel like a prophet. Thank you for making my day!
good job on this video
So can a magnet be used to simulate gravity? Wouldn’t that make it possible to make large objects rise and fall steady and slow with easy , my thinking is if you can use two gravity fields to cancel each other out ?
I'm pretty sure that magnetic fields obey the inverse cube law as opposed to gravity and most other things that are inverse square, meaning that it's not a very good analogue as the magnetic field drops off significantly faster than a gravitational field
Weird but interesting question. They actually did this a long time ago with a frog with 16T: en.wikipedia.org/wiki/Magnetic_levitation#Diamagnetically_stabilized_levitation
Basically water is diamagnetic which means it opposes a field applied to it so it pushes away from magnets. Trying to do this to something large like a human will probably be a lot more expensive but still possible.
Not perfectly because magnets don’t have the same drop off rate with distance as gravity. It drops off to the cube instead of square like gravity.
However if you’re given an object at a set unchanging distance with a known magnetic force it’ll act as if it was gravity, but moving it around wont behave the same.
They can act gravity-esque, as you can make orbits and stuff using magnets but the exact behaviour isn’t the same.
So you wouldn’t be able to exactly resist gravity with an opposing magnet, and it’s also an issue of scale where the earths gravity doesn’t change virtually at all within a few feet due to its size but a “smaller”magnet will change its force a lot over a few feet.
Using a strong electromagnet that you can modulate the strength of you could I guess engineer a magnetic elevator type thing but you’d have to fight against the fact that the magnet doesn’t act like gravity.
Even if magnets followed dropped off to the square like gravity, the only way you could exactly oppose gravity would be to have an equally strong magnet placed the same distance away as the earths core (I think).
I just knew that there is a weird phenomenon called ball lightning, it's a visible ball of light flying around and or so...
A magnet can counter-act gravity on a local scale (like at the point where all the magnetic fields intersect in some magnetic tweezers), but gravity and magnetism behave fundamentally differently, as the rest of this thread discussed. And, if we could somehow control and manipulate the theoretical graviton (the gravity analog of the electromagnetic photon), then we could actually affect gravity itself.
Let's not forget that the biggest payouts in the markets don't come from great performances but rather it's great promotions. Stay invested, diversification for streams of incomes is very important
I urge everyone to start somewhere now no matter how small, this is literaly the time for that, forget material things, don't get tempted,i became more better the moment realized this.
You're absolutely right Waiting for the government to provide is a big waste of time. Investing is how you create Wealth, I started investing from pandemic crash
How can someone who is just starting out navigate the crypto space? I don't have the heart to see the bulk of my portfolio go from green to red
If you are new, then you definitely need some guide from an experienced investor or a professional. That's the most way to jump into the market these days.
There might be so many investment out there but if profit must be considered which is the actual sole aim of every investment then I'll advice you to go into bitcoin trading because it has a higher profit rate than most investments.
Wow Doc was on the right track with the flux capacitor 📡
Scientist building the 1200 tesla machine: *looks down at copper tubes*
"........I'm so sorry for what I'm about to do to you..."
Claim your “here within an hour” ticket right here🏆