What is the Strongest Magnet We Possibly Could Make?

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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!
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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

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25 дек 2022

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Комментарии : 1,6 тыс.

@SciShow Год назад

Visit brilliant.org/scishow/ to get started learning STEM for free, and the first 200 people will get 20% off their annual premium subscription.

@greensteve9307 Год назад

* metric tonne. There is no such thing as "metric ton". It is ALWAYS spelled "tonne" when you are referring to the metric weight.

@NoMusiciansInMusicAnymore Год назад

What's 20% off free?

@waynegnarlie1 Год назад

How large of an asteroid could this 25-Tesla magnet protect from radiation, as well as Earth's magnetic field?

@warload420 7 месяцев назад

@@greensteve9307p]]ppp

@swilkobarfingtoniii1642 Год назад

I liked how you did everything you could to avoid saying the words "Flux" and "Capacitor" together. Impressive.

@N3ur0m4nc3r Год назад

😅

@SciShow Год назад

We do what we can.

@ChrispyNut Год назад

Oh yea, another bad joke they skipped. I'm even more disappointed now. This is usually a good place for bad jokes/puns.

@THATDAMNEDGAMERDoesStuff Год назад

@@ChrispyNut dang bro, you really upset about that huh😂

@ChrispyNut Год назад

@@THATDAMNEDGAMERDoesStuff Devestated, Bruv. If I gave two hoots about "Christmas", this woulda ruined the whole thing for me. It's certainly ruined the year. 😏

@chew_1993 Год назад

I’m more impressed that someone was like “hey what if we use a big magnet to align people’s protons”

@foty8679 Год назад

I want to know how strong a magnet needs to be to rip those protons out of people.

@DemPilafian Год назад

To this day Dr. Evil is still irate that his brilliant idea was stolen in order to make medical devices that help save lives.

@iainballas Год назад

@@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.

@LeviathanStormPrince Год назад

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.

@scrotymcboogerballs6756 Год назад

@@LeviathanStormPrince thanks for the explanation

@TAP7a Год назад

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

@Naokarma 7 месяцев назад

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)

@mattalevine Год назад

12:49 "So that explosion was actually a sign of great progress!" What an amazing sentence.

@Theoryofcatsndogs Год назад

That was what they said about the A bomb

@florianellerbrock8922 Год назад

Achievement unlocked: proton bomb

@ooooneeee Год назад

I'll make a note here: huge success.

@voodoovince8001 Год назад

What is a fission bomb but a volatile Nuclear reactor

@Shifter-1040ST Год назад

Krogan scientists approve

@whistlinturbo Год назад

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.

@Stettafire Год назад

I'd be in favour of an additional video taking about that

@whistlinturbo Год назад

@@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.

@dexterPL Год назад

@@whistlinturbo get The Making of the Atomic Bomb - by Richard Rhodes, this is full story, better that most movies

@benwu7980 Год назад

@@dexterPL I am pretty excited for the Oppenheimer movie this year, the trailer looks pretty good.

@christopherleubner6633 Год назад

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.🤔🤓❤

@tobiasheal Год назад

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.

@Markusthurmanius Год назад

How bad is the chemical shift on an 11T magnet? Have you seen any of the images?

@tobiasheal Год назад

@@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.

@SciShow Год назад

So cool!

@jackaw1197 Год назад

I too, work in a non-magnetic field.

@davidadams421 Год назад

@@jackaw1197 This comment needs many more likes.

@ryandoyle3413 Год назад

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

@michaellashansky9471 Год назад

What about the 36 Tesla magnet that was made by Superpower Inc about 10 years ago?

@BenjaminCronce Год назад

I bet there are some interesting engineering issues dealing with super-fluids in a commercial application

@shufflecat3334 Год назад

In my head there's some sort of inside joke behind 7T and that sort of stuff is, like, my favorite thing on Earth :)

@branchcovidian2001 Год назад

@@michaellashansky9471 It would be _overkill_ for an MRI.

@davelowets Год назад

@@michaellashansky9471 What about it??

@4Rhino60 Год назад

I really liked how detailed you explained the actual purpose of those magnets love your videos in general, but this one was outstandingly interesting!

@SciShow Год назад

The team worked super hard on this one!!

@ross-carlson Год назад

@@SciShow Oh come on, be honest Hank - your team works super hard on _everything_ you guys produce!!

@joehelland1635 Год назад

From personal experience, dont wear tight polyester clothes in an mri..... not a fun time

@AltonV Год назад

@@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

@prapanthebachelorette6803 Год назад

@@AltonV i wonder too

@PartiallyCooked Год назад

I like how we can just casually create, configure, and destroy very important magnetics fields at any point we want.

@tammyhollandaise Год назад

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.

@deusexaethera Год назад

Or a disembodied brain. Just sayin'.

@Amboss39 Год назад

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.

@emerald2805 Год назад

I love how excited Hank gets about science.

@KnightSlasher Год назад

This is Ironman greatest enemy

@black_rabbit_0f_inle805 Год назад

I thought it was alcoholism

@MrRez808 Год назад

Seawater

@feisaljauharitufail Год назад

Agree. Especially with nanotechnology because it's a lot smaller.

@Thund3rDrag0n12 Год назад

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

@musicplus6306 Год назад

Iron man had a non magnetic alloy of gold and titanium...

@JohnDrummondPhoto Год назад

Today I learned that Doc Brown was actually onto something back in the 1980s.

@lowkey_Ioki Год назад

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.

@JasonMTuftsify Год назад

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.

@-Slinger- Год назад

If/When you do an episode on fusion, will you look into Helion's method as well as the tokamaks please?

@SciShow Год назад

Oh yeah...though Real Engineering's video really hit it out of the park already!

@-Slinger- Год назад

@@SciShow True

@ChrispyNut Год назад

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.

@-Slinger- Год назад

@@ChrispyNut I seem to recall mach 3, but I could be way off.

@dl5244 Год назад

@@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)!

@antarbenson9328 Год назад

So Tokyo made a Flux Capacitor? So does it make a doomsday device or time travel possible?

@icollectstories5702 Год назад

Perhaps time travel, but you'd have to pass through the ring at minimum diameter!😜

@antarbenson9328 Год назад

@@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.

@mikeoxmall69420 Год назад

It has to reach 88 mph first ;)

@threeMetreJim Год назад

@@icollectstories5702 No time travel, there was always less toilet paper on the roll afterwards.

@dillonjohnson6017 Год назад

defintley one of your best videos recently thank you guys for continuing to produce amazing boundary pushing content!

@mesillahills Год назад

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.

@davelowets Год назад

"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.

@mesillahills Год назад

@@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.

@k.l.manring2083 Год назад

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...

@lordgarion514 Год назад

The iron in your blood is nonmagnetic. If it was, we couldn't be in the room with one, much less inside.

@puckelberry Год назад

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.

@lordgarion514 Год назад

@@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.

@lordgarion514 Год назад

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.

@puckelberry Год назад

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

@spacemissing Год назад

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!

@CapnCrunchESO Год назад

Video title should be “Japanese researchers create flux capacitor”

@rexroyulada6267 Год назад

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

@sethkeown5965 Год назад

share your findings after a peer reviewed process.

@rexroyulada6267 Год назад

@@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.

@sethkeown5965 Год назад

@@rexroyulada6267 thanks!

@rexroyulada6267 Год назад

@@sethkeown5965 No problem, good luck and have fun with your discoveries!

@kindlin Год назад

@@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.

@ObservingBlue5943 Год назад

"The explosion was a sign of great progress".... Now that's what I call science!! 😁

@pmh2390 Год назад

I like when they compress quarters using a similar setup as the electromagnetic flux-compression magnet

@davelowets Год назад

Putting quarters on a train track is MUCH more effective, and WAY easier... 🤔

@asa9528 Год назад

I love scishow so much! Especially Hank’s episodes. This was so interesting!

@juanchox7 Год назад

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

@AlfredEiji Год назад

The violet flames really sell the otherworldly consequences.

@adamtschupp9825 Год назад

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?

@tanin34 Год назад

A long long time I believe

@k.l.manring2083 Год назад

🤯🤯🤯

@nuthenry2 Год назад

they have a half-life of 700 years, so after 700 years they'll be half the strength

@rgbii2 Год назад

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.

@howdy832 Год назад

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

@jzero90921 Год назад

I watched you and your brother in years and continue to do so today. I think that speaks volumes

@thomasolson7447 Год назад

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.

@krystostheoverlord1261 5 месяцев назад

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

@GovernmentCanada Год назад

4:32 I thought that was a polar bear.

@Phoenix-ug1ru Год назад

so the tokyo team basically just pulled a pistol shrimp move but with magnets, im pretty behind thats cool!

@fss1704 Год назад

Man i wished more people would know the reference.

@kerzwhile Год назад

Best condensed description of the LHC I've heard!!

@deusexaethera Год назад

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?"

@da33smith37 Год назад

What a really fascinating presentation. You set the bar really high!

@WizardofTruth Год назад

Innteresting and well made video. Thanks for making it

@shanehayes2274 Год назад

Such an incredible way of explaining the concepts of MRI!

@danielsahlberg4576 Год назад

The more I learn about physics the more I sense that magnetism feels less like magic and gravity feels more like magic.

@patrickhenigin4805 Год назад

Magnets are easy to understand. At least I think I understand them. Gravity, not much. Most people think grabity is a force.

@DuckDoolittle Год назад

@@patrickhenigin4805 Gravity is one of the four fundamental forces if I’m not mistaken

@ThePowerLover Год назад

@@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.

@ThePowerLover Год назад

@@DuckDoolittle Not quite in our current "understanding".

@TheRealFreznoBob Год назад

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.

@militantpacifist4087 Год назад

*Laughs in magnetar*

@williamdetempolivre Год назад

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...

@litterbox0192 Год назад

@@williamdetempolivre the backyard scientist goin wild

@iliketrains0pwned Год назад

Calm down Duarte

@mikeoxmall69420 Год назад

For when you want a magnetic field strength of yes

@Erhannis Год назад

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.

@kepspark3362 Год назад

This is inspiring & rekindling my interest in physics. Thanks!!

@retropipes8863 Год назад

Very cool! Magnetism, electricity and science in general is fascinating.

@reedfish99 Год назад

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!

@AnonymousFreakYT Год назад

11:53 - Wait… They changed the flux density with capacitors? Did they go back in time?

@Stettafire Год назад

Time is relative so... Maybe?

@LordPratticus Год назад

I am so grateful for the people who make up Scishow. ♥️

@nobody6032 Год назад

You're welcome

@deusexaethera Год назад

They don't make it up. They research it.

@spiderdude2099 Год назад

Scientist building the 1200 tesla machine: *looks down at copper tubes* "........I'm so sorry for what I'm about to do to you..."

@ODSoldier Год назад

An Agency titled "ERDA" (Energy Research and Development Administration) of the US Government had a contract (award?) with the University of Tennessee to study power production using an MHD generator (Magnetohydrodynamic Generator) in June 1976. The initial test bed for this was a jet engine burning plasma like fuel made from coal and the jet exhaust passed through a strong magnetic field to strip the electrons from the hot gas. I retired from the US Army one year earlier (Enlisted E-8) having worked in Metrology and Calibration. Completing a BS in June 1976 I was offered a contract position to install and maintain instrumentation for the project located in Tullahoma. When interviewed for the job I was given a look at the test bed. As I recall the jet engine was about 12 inches diameter and about 4 foot long. The current source for the magnet was simply a large bank of DC Arc welders. It was an interesting project but one week later TVA offered a position repairing instrumentation on the Browns Ferry nuclear plant damaged by a bad fire. I've often wondered what happened with the MHD project. As a side note I heard at that time (1976) Russia had the strongest magnet in the world.

@morestupidforms Год назад

It's funny, we are still, basically, smashing rocks together to see what happens.

@pawefratczak9868 Месяц назад

And I think we always will be

@TaylorFalk21 Год назад

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

@tarmaque Год назад

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.

@davidadams421 Год назад

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.

@Saito232005 Год назад

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 🤔

@davelowets Год назад

Not really even close to the same...

@Saito232005 Год назад

How so? The arm apertures act as the magnetic field. Support your argument. Or are you just saying no to say no

@cancel1913 Год назад

Hank has one helluva magnetic personality!

@cade8986 Год назад

Your description of MRI was pretty spot on.

@glennbabic5954 Год назад

-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.

@coltynstone-lamontagne Год назад

Yeah but that just means It's the mathematical limit and most laymen would just say the number at that point

@MasterOfYoda Год назад

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.

@JohnSmith-kc6ov Год назад

...no you don't. You don't have 1/5 of an MRI machine to hang pictures on your fridge.

@MasterOfYoda Год назад

@@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.

@MasterOfYoda Год назад

@@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.

@pilsnerd420 Год назад

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.

@scottmantooth8785 Год назад

*7:16**...you know this is seriously cutting edge science when you get to use the term whizzing around to convey a concept or mechanical function or process*

@Autom_te Год назад

On this episode of WatchMojo we'll be counting down the five most powerful magnets in the world

@wyvern3 Год назад

Was expecting the levitating frog in here, such an interesting experiment

@CybershamanX Год назад

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! 😉

@Arkie80 Год назад

Protons in line for the movie; radio wave cuts in line: Proton: 'Hey what gives! Quit shoving!' Doctor: 'It looks benign.'

@swondrak Год назад

i hope im not the only person that watched this and thought alchemy.

@teigcarlson2450 Месяц назад

We live in a magical world

@SilverAlex92 19 дней назад

"So that explosions was sign of great progress!" God I love science when its used for cool stuff

@jakehall7350 Год назад

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.

@robbob1866 Год назад

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

@icollectstories5702 Год назад

Perhaps an anti-static gun? They spray ions which neutralize charge differences. Wow! More expensive than I expected.

@TheGreatDaneR Год назад

Put a dryer sheet in the bin. Static will be reduced, and it will smell nice too.

@12pentaborane Год назад

Polonium-210, or anything that emits nuclei.

@incognitoburrito6020 Год назад

I pick up the staticky object and repeatedly bump it into the nearest doorknob. It... kind of works.

@davidadams421 Год назад

Ground it? Like put some copper tape around the top, connect that to ground?

@bluetoes591 Год назад

But what is the Tesla sum of all the magents at CERN?

@Excedrine Год назад

Yes

@AageV Год назад

More than 3.

@DrDeuteron Год назад

8T * 27km = 216 kilo-Newton per Amp...for what that's worth

@davelowets Год назад

@@DrDeuteron That doesn't equal the answer to the question..

@DrDeuteron Год назад

@@davelowets what do you think a "Tesla sum" is?

@dibakarray5442 Год назад

Outstanding Video. Superior educational experience.

@harrietharlow9929 Год назад

I remember seeing a video on the exploding magnet on RU-vid years ago. That was epic.

@foracal5608 Год назад

Magnets for fusion reactors is a very good thing hope we get that soon

@maxmyzer9172 Год назад

They actually already did, its just not scalable yet. Heres a kind of deep dive into how: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-_bDXXWQxK38.html

@rikrikonius1301 Год назад

Magnets are like a MAGic NET for metals. That's not why they're called that, but it should be.

@bettygreenhansen Год назад

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!

@shadowofthecandle Год назад

If you keep putting these sweet thank yous at the end, I will keep watching all the way til the end ♡

@sadanyagci Год назад

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?

@shifty1927 Год назад

Someone call the insane clown posse , they're finally explaining how magnets work.🤣

@gerry5712 Год назад

One of the big advantages of the MIT / Commonwealth Fusion magnet is it uses high temperature superconductors that can work at liquid nitrogen (77 degrees Kelvin) as opposed to liquid helium (< 4 degrees Kelvin). From thermodynamics it takes far less energy to maintain liquid nitrogen temperatures than liquid helium temperatures (look up "Carnot efficiency")

@itsjustme4026 Год назад

3:41 the person inside the magnet would be so terrified

@wernerdanler2742 Год назад

So they finally did invent the "flux" capacitor. 😆 🤣

@glenngriffon8032 Год назад

So does electromagnetic flux-compression mentioned at the end require a flux capacitor?

@Orthaluminox Год назад

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!!

@rdapigleo Год назад

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?

@ei96byod Год назад

How much energy do the capacitors at the University of Tokyo store and pump into the flux-compressor? My guess is 1.21 Gigawatts.

@ASOTFAN16 Год назад

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?

@MarkJones Год назад

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.

@mumujibirb Год назад

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.

@ASOTFAN16 Год назад

@@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

@ThisIS_Insane Год назад

@@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!

@Victor_Marius Год назад

@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?

@LouCadle Год назад

I knew a neurologist who worked at Mayo when they got their first MRI. All the docs would run with glee into the office right over it with their paper clips, spill them out, and watch them dance. I assume back then they hadn't quite gotten the shielding right.

@alexreza1552 Год назад

1:32 “ is this the one that exploded” 😂

@JustAnotherBuckyLover Год назад

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.

@stinkiaapje Год назад

you cannot feel an mri field. Probably just placebo

@JustAnotherBuckyLover Год назад

@@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.

@robotronixgaming2933 Год назад

@@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.

@JustAnotherBuckyLover Год назад

@@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. 🙄

@robotronixgaming2933 Год назад

@@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.

@neilgoodman2885 Год назад

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

@lazytommy0 Год назад

Super neat! I love electricity and magnets

@marcberm Год назад

Wait... So the Flux Capacitor IS a real thing??? 😀

@saiynoq6745 Год назад

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 ?

@liamshelley496 Год назад

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

@ericmollison2760 Год назад

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.

@Chevsilverado Год назад

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).

@HolahkuTaigiTWFormosanDiplomat Год назад

I just knew that there is a weird phenomenon called ball lightning, it's a visible ball of light flying around and or so...

@kindlin Год назад

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.

@zachreyhelmberger894 Год назад

Nice summary !! Thank you!

@pdan4 Месяц назад

"That explosion was actually a sign of great progress!" words to live by.

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@Yashuop Год назад

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@SuperNetSpyder Год назад

I am glad I came back to Sci Show

@DeathlyTired Год назад

Great Scott! This was good.

@eoincostello4634 Год назад

Wow Doc was on the right track with the flux capacitor 📡

@jonpomerance-trifts6113 Год назад

Good to see you again, Hank. The RU-vid algorithm seemed to remove you from my feed for ages. Still got my HG signed Sagan poster. Hi to John. DFTBA,!

@cantaloupix9753 Год назад

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.

@jayknightspiritualscientes2267 Год назад

DUDE THIS IS THE TRUTH THANK YOU SOOOO MUCH

@DavidLindes Год назад

11:27/11:43/12:24/etc. - this bears striking similarities to electromagnaforming... e.g. for making a "'quarter shrinker"... which I participated in at a makerspace once... much fun -- but also, scary scary stuff. We're probably lucky to all be alive. Exploding copper coils are no joke! Containment was a serious challenge, and our first tries at it were....... less effective than one might hope for, for safety reasons.