World's Strongest Magnet!

The world's strongest magnet is a million times stronger than Earth's magnetic field. Learn more about sustainability and Google’s efforts at sustainability.google. Part of this video was sponsored by Google.
Trends insights for the past year are based on Google Trends data from 2/10/2022 - 2/10/2023, U.S.
▀▀▀
Thanks to the entire NHMFL team - especially Tim, Stephen, Caroline, Kristin, Sam, Lance, and everyone who helped with the demos - for the great visit.
The NHMFL is funded by the National Science Foundation and the State of Florida.
Special thanks to Henry from Minutephysics for lending his magnet animations from our magnet collaboration: • MAGNETS: How Do They W...
▀▀▀
References:
Liu, Y., Zhu, D. M., Strayer, D. M., & Israelsson, U. E. (2010). Magnetic levitation of large water droplets and mice. Advances in Space Research, 45(1), 208-213.
Simon, M. D., & Geim, A. K. (2000). Diamagnetic levitation: Flying frogs and floating magnets. Journal of applied physics, 87(9), 6200-6204.
Berry, M. V., & Geim, A. K. (1997). Of flying frogs and levitrons. European Journal of Physics, 18(4), 307.
▀▀▀
Special thanks to our Patreon supporters:
Tj Steyn, Meg Noah, Bernard McGee, James Sanger, Elliot Miller, Jerome Barakos M.D., Amadeo Bee, TTST, Balkrishna Heroor, Chris LaClair, John H. Austin Jr., Eric Sexton, John Kiehl, Anton Ragin, Diffbot, Gnare, Dave Kircher, Burt Humburg, Blake Byers, Evgeny Skvortsov, Meekay, Bill Linder, Paul Peijzel, Josh Hibschman, Mac Malkawi, Juan Benet, Sunil Nagaraj, Richard Sundvall, Lee Redden, Stephen Wilcox, Marinus Kuivenhoven, Michael Krugman, Cy 'kkm' K'Nelson, Sam Lutfi
▀▀▀
Written by Derek Muller
Edited and Motion Graphics by Trenton Oliver
Coordinated by Emily Zhang and Derek Muller
Filmed by Derek Muller, Trenton Oliver, Raquel Nuno and Emily Zhang
Additional video/photos supplied by Pond5 & Getty Images
Music from Epidemic Sound
Thumbnail by Ignat Berbeci
Produced by Derek Muller, Petr Lebedev, and Emily Zhang

[@bovinejonie3745]

Of course you need the worlds strongest man to control the worlds strongest magnet. Dude’s jacked 😂

[@bramtube6922]

though this to 😂

[@stuffmadethen]

He's working out passively, just being around the magnet all day 😂

[@piccalillipit9211]

*IM GUESSING* you get muscles like that from pulling stuff off the magnet all day...?

[@wertacus]

Bro bench presses metal chairs while laying on it

[@butthole9843]

CUMGUTTERS!!!

[@BlackFragFilms]

Love how open those guys are to just mess around with equipment worth millions of dollars. This type of stuff inspires young people interested in science.

[@PeterDB90]

It's how discoveries are made :P

[@asterix45]

I wish science was taught in schools like this, so more young ppl would be interested in science.

[@maxwyght1840]

@@asterix45 Too much liability. One day some kid gets a booboo during shop class, and a week later, his Karen mom shuts down shop class for the entire country.

[@alexc4924]

​@@asterix45 we had a few science shows with Jacob's ladders and beds of nails and levitating superconductors and stuff like that

[@PeterDB90]

@@asterix45 I've always felt that there are lots of young people interested in science, it's just not a career that's pushed very much in schools (at least not when I went). Often times the careers that pop up as options that are STEM oriented focus mostly on the TEM part, not so much the S part. At least when I was a kid, I always thought that science is something that is reserved for the true geniuses of our world, so I didn't get into it because I felt like I don't have the inherent "talent" required to become a scientist, even though science and math were my favorite subjects in school (ended up going into accounting because I was told "that's math" - it isn't). Turns out, you don't have to be a genius - all it takes is for you to be competent enough to be able to grasp the concept after you study, and passionate enough to actually study. Had I known that I would probably pursue it.

[@gameskyjumper1721]

Buy a house. Build a 45T magnet under the kitchen floor. 3 in the morning, woke up because hungry. Turn the magnet on.Heat up food and eat it in a metal plate. Now finally you can eat in peace knowing that if you drop the plate accidentally, there will be no sound to wake your family up.

[@GinGouki]

Wow😂 amazing

[@miabee6267]

Completely practical

[@troybrumm17]

It was fun having the Veritasium team at the lab! We don't often get a chance to "play" with our instruments and it was great to be able to demonstrate a few principles of magnetism in creative ways.

[@Lord_Alhaitham]

amazing

[@BabyJesus66]

F-ing magnets, how do they work?

[@tythanh4708]

ok

[@brandonaservantofmercy8561]

Hi!

[@troybrumm17]

@@brandonaservantofmercy8561 Hey!

[@Seraph.G]

I love how some labs are like "everything we do is HIGHLY CONTROLLED, you can record but DO NOT do anything weird" and then in this one it's like "yeah let's tape some washers into a NERF football"

[@soaringvulture]

When I worked in a lab, we often did funky stuff for testing or for fun. A lot of the time, it progressed into something where we could plan an actual experiment that collected data. You learn a lot through playing around.

[@mr.rabbit5642]

@@soaringvulture Yeap, thats how we have fun in science circles

[@PrimeSuperboy]

not to mention "wanna use a leaf blower?"

[@NeutroniummAlchemist]

I mean they had a potato cannon just lying around with slugs ready to go.

[@error.418]

Based on the shots he cut to of the other football, it seemed more like this setup was something they had done before, including tossing it at the outside of the magnet. It doesn't seem like any of the experiments came from Veritasium but were instead this lab showing off fun things they had tried before.

[@davidasher3624]

Imagine being so successful on KZbin that not only does google pay you ad revenue, but the straight up sponsor you. That's badass! Keep it going!

[@marianl8718]

This is meant to hide the fact that humanity is pushed by force on the path of science, a path that people unfortunately consider a priori good.

[@TheGuyWhoAsked1245]

Tbh I don’t understand why Google would sponsor something, they literally own KZbin , this is the same as saying “I was sponsored by KZbin” like wtf

[@thefinestmeme3317]

@@TheGuyWhoAsked1245public relations. Sponsoring beloved creators makes you consider them with higher regard

[@Toby-rl8sg]

Google is the world’s richest country.

[@seabass273]

@@Toby-rl8sg you stupid?

[@pasta0328]

You can tell that dude drinks a ton of water with how hulked up he appears. Truth is he's only like that from standing near the magnet

[@xplorerF]

Discovering magnetic rocks 3000 years ago must have seriously blown some minds 🤯

[@UncleKennysPlace]

You can bet that they were discovered long before that, just no documentation.

[@savagepro9060]

"Discovering magnetic rocks 3000 years ago must have seriously blown some minds" Yeah crack rocks, the addiction have a long history🤣

[@SyukriLajin]

ìf i find a rock that sticks to each other today, i'd still be excited, even knowing what it is. rofl

[@Ixidora]

It blows minds to this day, magnetism is (to my knowledge) the only fundamental force that science hasn't identified the unique particle which causes it. If I could study anything at all it would be magnetism, likely the final piece of the standard model puzzle.

[@gownerjones1450]

​@@Ixidora Magnetism is one effect of the elctromagnetic force which is caused by all subatomic particles that carry electric charge. These come in two flavors, elementary particles and composite particles (also called hadrons). I'll list some of them for you here: Elementary: Electrons, positrons, all quarks and anti-quarks Hadrons: Protons, anti-protons (these consist of two up-quarks and one down-quark / two anti-up-quarks and one anti-down-quark respectively), pions, kaons (these consist of combinations of quarks as well). There are some particles that we do in fact not know about yet. A few years ago, we found one of them, the Higgs boson which is the carrier of the gravitational force. Now, we are on the hunt for dark matter. There is a predicted particle we are still trying to find called the axion which could explain the phenomenon. Disclaimer: I am not a physicist, I just read a lot about the topic because of personal interest. I might still be very wrong.

[@zeph0shade]

You can just tell that man either is or would be the best science dad ever. None of these little "experiments" are new concepts for him at all, but he humors and even helps set things up that must seem practically childish to him, just like a dad helping his child with a science fair project.

[@nasso_]

i wish he was my science dad 🥴

[@jefffrasca4054]

I don't think he's humoring them at all. Some things never get boring.

[@mikeaninger7388]

I’m gonna take a half a second here just to admire Captain America’s guns here…

[@iloveplasticbottles]

Let's be real here: he probably finds those little "experiments" fun too

[@nasso_]

@@jefffrasca4054 i wish i was consuming him 🥴

[@sammy5590]

So awesome to see the MagLab get the spotlight it deserves! I had the pleasure of going to FSU and I got to meet so many people who worked there. All incredibly smart and able to convey information to anyone. The annual open house is something of a local holiday.

[@466rudy6]

World's Strongest Shirt Sleeves

[@Redmenace96]

I know that pro scientists are interested in sharing their knowledge, but letting Veritasium Dude come in and goof around is a very kind and helpful choice. My students really dig this.

[@NandR]

Here in Tallahassee they do tours of the MagLab and show demostrations. So cool to see Veritasium here is cool.

[@justdoit83388]

He's the blippi of science in this video.

[@VeganSemihCyprus33]

You are being fooled 👉The Connections (2021) [short documentary] 🔥

[@ImDemonAlchemist]

Worth acknowledging that "Veritasium Dude" is a PhD Physicist himself.

[@Sanity016]

I like the magnet guy, he's smart without being cocky. He knows the safety rules and has fun within them.

[@Rathbone_fan_account]

My man's max leveled Intelligence and Strenght.

[@VeganSemihCyprus33]

You are being fooled 👉The Connections (2021) [short documentary] 🔥

[@timb7342]

9:02 They went a hell of a long way round to re-inventing the soft close toilet seat.

[@davidhinostroza9420]

As someone who wants to apply to use those facilities, I'm surprised on how you got the time to film it! Great video!!

[@MartinFrancisEcclesiact]

It's probably a ngreat free commercial for them.

[@ares395]

That is ridiculously cool. And I love how scientists are basically adults that never lost their childhood curiosity.

[@LuizEnger]

Hah, you perfectly described how I feel!

[@ts90000]

The difference between screwing around and science is whether or not you write down a hypothesis and conclusion.

[@firewoodloki]

@@ts90000 Ah, the documentation part where all children stop having fun.

[@gauravnegi4312]

@@firewoodloki so true.

[@robertanderson2424]

I think most people would prefer interesting work But not everyone gets so lucky lol

[@jiyuandong8964]

Love the magnet guy! He knew literally everything about the questions Derek asked, and you could just tell that man knows sooo much about what he does it's ridiculous. Anyway, great video!!

[@xehP]

I mean the majority of people he talks to know the answers to the questions he's asking as 1. they're literally hired for a reason so they know what they're doing and 2. he's asking pretty laymen questions, which are easy for the professionals to answer, but I guess the unorthodox out of the box thinking (childlike) questions can throw them off.

[@MrRinre]

Are you surprised that an expert in their field knows the answers to the questions lol?

[@unknown2k229]

IMPORTANT MESSAGE I invite you to Islam - i invite you to peace. Worship Allah, turn back to the creator of the heavens and the earth Allah. To him belongs this kingdom This life is only temporary. We must use our time to prepare for the meeting with Allah on the Day of Judgement. I dont want to enforce anything. I am only here to spread the truth. I highly recommend you to convert/revert back to Islam before death - this is the best for you. Islam is the best way of life! To find true happiness you must convert to Islam, become a muslim and get closer to Allah.... It would be good for you

[@VeganSemihCyprus33]

You are being fooled 👉The Connections (2021) [short documentary] 🔥

[@MROIY]

I agree

[@WinJan]

I love how nonchalant these guys are. They're like "sure whatever" to whatever whacky or dangerous thing you want to do with their world record super magnet

[@SunBane67]

I did research here on a winter trip in undergrad. Awesome team and incredibly friendly people. The maglab is a marvel and I feel so fortunate to have gotten to do research with their instruments. paper pending peer review :)

[@charizardjmj]

That guy is multi-classing in real life. He's strong, smart and charismatic

[@korganrocks3995]

I didn't realise Half-Orc Barbarian/Scientist was a legal combo! 😄

[@Shrooblord]

@@korganrocks3995 Storm Barbarian / Graviturgy wizard multiclass with a dash of artificer mixed in

[@mahiranindo1967]

Bro is hank

[@deefman123]

and even pulls off a crew cut

[@Jayess-c]

He's professor hulk.

[@noussitresor56]

Thanks very much Veritasium for giving us the opportunity to see amazing places we would certainly never visit

[@-Graham]

It must be so rewarding and exciting to be at the developmental forefront of new technologies like this! I am awestruck and envious of these guys! I love it!

[@longpeter-cw3sg]

I don't think you know what envious means.

[@-Graham]

@@longpeter-cw3sg It strikes a desire in me to want it for myself. It makes me want to emulate it for myself if it were possible. I know exactly what it means and I stand by what I said

[@longpeter-cw3sg]

@@-Graham so you want it for yourself and you resent the people that have it?

[@-Graham]

@@longpeter-cw3sg Not at all. Resentment and envy are not the same thing. If I resented them then I would have said that.

[@longpeter-cw3sg]

@@-Graham it's literally in the definition of envy

[@mizuhonova]

Whoever on the team randomly thought to bring a potato cannon and leaf blower to the labs deserves a raise lol.

[@zacharymitchell8546]

Not only that - look at the top projectile rotating. Some one made a potato cannon with a rifled barrel lmfao

[@larryenglish9292]

@@zacharymitchell8546 we shoot it over a pond during our annual open house. we will begin constructing a new canon for demos this year 🙂

[@lorigoshert6667]

@@larryenglish9292 We were there! I was thinking the fish and turtles must have been very confused that day.

[@unknown2k229]

IMPORTANT MESSAGE I invite you to Islam - i invite you to peace. Worship Allah, turn back to the creator of the heavens and the earth Allah. To him belongs this kingdom This life is only temporary. We must use our time to prepare for the meeting with Allah on the Day of Judgement. I dont want to enforce anything. I am only here to spread the truth. I highly recommend you to convert/revert back to Islam before death - this is the best for you. Islam is the best way of life! To find true happiness you must convert to Islam, become a muslim and get closer to Allah.... It would be good for you

[@VeganSemihCyprus33]

You are being fooled 👉The Connections (2021) [short documentary] 🔥

[@st_420]

This is the most pumped up scientist I've seen so far.

[@juliuszkocinski7478]

Bro must've lifted couple aluminium plates in fields there

[@misakamikoto5164]

@@juliuszkocinski7478 I think this his private gym

[@leon.690sm9]

@@juliuszkocinski7478 he just stands on the magnet and lifts 100g aluminum weights XD

[@mikeoxmall69420]

He's not just pumping iron, he's pumping iron in a strong magnetic field 💪

[@leon.690sm9]

@Josias Lourenço 🤨

[@ForOdinAndAsgard]

I knew about the falling effect of certain materials in a magnetic field but I have never seen it before. That is just fantastic to see.

[@deawilld4346]

I love Derek having fun like a child playing with a leaf blower while standing on a floating magnet

[@conrad2468]

What an absolute unit of a man.

[@XaviLR]

actually the units were teslas not men

[@jonathanbelfire]

@@XaviLR Reminds me of Physics class... Teacher: You have 45T at the magnet. You lose 5T for every meter, what are you left with when you are 2 meters away? Me: 35 Teacher: 35 what? 35 Men? 0 points.

[@bgtyhnmju7]

Yup. Keeping this tab open for all the right reasons.

[@foxbutterfly-eden8715]

Nikola Tesla was the truest unit

[@Jayess-c]

It's professor hulk in real life lol

[@TimeBucks]

This is so cool

[@UKThisTheNew]

👍

[@rakhimukherjee6138]

Nice video

[@souvikmondal8575]

Nice

[@vasilemariangiarap7005]

Super tare

[@nishatanwani6460]

It was great watching the world's strangest magnet..

[@bhupendersingh8427]

Great videos Bud! Total dope....scientific kind!!! Thanks.

[@iLLadelph267]

3:12 I appreciate this man's attention to safety!

[@KaiBurley]

One of my favorite parts of these videos is seeing who works at these facilities and hearing their excitement about their slice of science

[@unknown2k229]

IMPORTANT MESSAGE I invite you to Islam - i invite you to peace. Worship Allah, turn back to the creator of the heavens and the earth Allah. To him belongs this kingdom This life is only temporary. We must use our time to prepare for the meeting with Allah on the Day of Judgement. I dont want to enforce anything. I am only here to spread the truth. I highly recommend you to convert/revert back to Islam before death - this is the best for you. Islam is the best way of life! To find true happiness you must convert to Islam, become a muslim and get closer to Allah.... It would be good for you

[@VeganSemihCyprus33]

You are being fooled 👉The Connections (2021) [short documentary] 🔥

[@lycu3093]

ok

[@cacau1810]

ok

[@furmal86]

i know right , i am not that smart to understand all the science but it very heartwarming to see all these super smart people interact and share their knowledge.

[@dkaloger5720]

Everyone at this lab seems to be having so much fun .Magnets are so cool

[@Fr_g]

@@wingit7335 What kind of bs is this? It doesn't affect people, lol

[@ilyaa2010]

@@wingit7335 bro thinks he is gonna die there.

[@DrDeuteron]

Violent J's smurf account?

[@PosterityIslesNews]

@@wingit7335 its a magnet not a nuclear reactor lol

[@gedstrom]

@@Fr_g If it didn't effect people, we WOULD NOT have MRI machines!

[@kennarajora6532]

9:10 That's exactly what I'm learning in Physics class right now.

[@mysterymayhem7020]

anytime I watch some of these vids I feel like my head is going to explode with the sheer amazement of the intelligence of the people behind some of these mechanisms and the science behind it.

[@OneMasterDisaster]

Derek probably loved the “you’re strong like bull” compliment at 11:00 for it to make it into the final cut 😂

[@RGRundeRGRound]

[@Pikapop26]

Hahahahaha

[@w1111-vs3dd]

​@@RGRundeRGRoundgooglebajink 💀

[@Phoenix_Gaming5910]

[@clarkboyd9605]

About 10 years ago I worked at a company that made high speed, fiberoptic magnetic field sensors. Those sensors were taken to this facility in Florida for calibration. Since it was very time consuming to do these calibrations on all new sensor designs, I built a pulsed magnetic system to test the new designs. My system achieved pulses of about 12T in a 2 cubic inch central volume and saved the company a lot of money during R&D. It is great to see this video and it brings back some good memories.

[@tungsten2009]

Did ya get a raise?

[@notabot5878]

Did u get a raise tho

[@tungsten2009]

@@notabot5878 right?? I mean saving the company budget means you yourself should get a bit of it as well

[@notabot5878]

@@tungsten2009 yea exactly, they should have given him a cape

[@tungsten2009]

@@notabot5878 A promotion is better or a bonus

[@gwenturo9550]

It's probably nowhere near as strong as this one, but underneath the building at which I take my physics seminars at school, there's a big underground lab where they do plasma physics stuff, growing materials in plasma, shoot stuff with lasers, and it also houses what I was told was "the biggest and strongest electromagnet in the southeast" I got to see so much stuff going down there, it was mind-blowing. I wanted to cry because I was thinking about how many people never get to see this fascinating kind of stuff. I wish science was taken more seriously by the public.

[@j800r_aswell]

My brain: "This is fascinating." Also my brain: "Damn! That dude is built!"

[@robymaru03]

When scientists got jack, you know they're doing true science.

[@davianoinglesias5030]

One thing I like about Veritasium is that he interacts with the people who actually come up with stuff, the troops in the trenches.

[@niks660097]

i like that, "troops in the trenches" instead of bookish nerds..

[@user-nf1bz3sn4z]

I have so many torture ideas using this...

[@runnergo1398]

Physics Girl did, too. Unfortunately, she is sick from long Covid.

[@davianoinglesias5030]

@@runnergo1398 I love Physics Girl too, she is so hands-on and understands the subject.

[@csn583]

Back when I was growing up it seemed like they never made it past the PR person, or at best some mid-level manager.

[@inscrutablemungus4143]

9:03 This was an actual question on the physics GRE when I took it 6ish years ago. Do conducting plates fall slower or faster in a magnetic field? Lenz's law baby.

[@bokchoiman]

The fact that they let you do all this is mindblowing

[@007Strings007]

It looked to me like they do this stuff all the time, I mean they had a potato cannon with specialty made projectiles but yeah.

[@moonasha]

they're letting him shoot a potato cannon in a room that's probably word tens of millions of dollars. insane

[@007Strings007]

​@@moonasha Yeah I know, but it's not like he brought the potato cannon or made the projectiles they just like had it there it seamed like

[@amplifire-]

bro even got sponsored by google

[@hms1212]

pretty sure google made a large donation to the lab apart from sponsoring Derek. No way a government lab can be used just like this

[@Gecko17k]

Very cool video and lab. Thanks guys!❤❤

[@runli4605]

Hello from Tallahassee! The Mag Lab also does an amazing job for outreach. Every year they have an open house event that welcomes everyone to learn about their research. Love Mag Lab!

[@KarlKarsnark]

Howdy neighbor! Go Noles!

[@MistahHeffo]

The Mag Lab looks like it's quite a Lofty Pursuit.

[@VeganSemihCyprus33]

You are being fooled 👉The Connections (2021) [short documentary] 🔥

[@ssergium.4520]

I still can't believe we have access to these videos for free. This is so professionally made, cost so much money AND took so much time to make and I am here eating chicken shawarma going all "wow!" and "hmmm I should learn more about science". I love it so much.

[@maiamaiapapaya]

ikr! Our ancestors could not have predicted these awesome happenings of the future

[@thesnazzmaster]

It costed thousands of dollars just to operate that magnet for that time, amazing that they(they being whoever that money is coming from) are so willing to do this

[@ssergium.4520]

@@thesnazzmaster I mean it was google this time. They can afford it. But it’s crazy! I’m so happy about these videos

[@SanilJadhav711]

So true, internet has made the world so small and all of us so close, there's hardly anything stopping someone from just getting on the net and learning any skill they want or getting to know about any kind of knowledge My favourite version of this has to be Google Maps, like im laying here on the sofa and browsing the entire Earth, clicking on places, checking out cool sceneries and even walking the roads, its beautiful 🌏

[@TokiGK]

I mean, they are sponsored

[@sciencenate]

0:37 alright, I who spilled their drink on the Guinness award?

[@OfftheRecord2021]

The world's strongest magnet is an incredible feat of science and engineering, and I'm fascinated by the potential applications for this technology!

[@gallium-gonzollium]

17:21 that grasshopper do be confused being levitated like that 😂

[@samarro7250]

14:52 You can hear his inner kid come out when he says, "For real?" in response to hearing about spinning on a magnet with a leafblower.

[@EigenA]

I took an electromagnetic course in my undergrad. It was by far my favorite but I didn’t understand at the time what career path that offered me. Should have gone to join these guys.

[@AstolfoGayming]

Looking at the thermal imagine around 9:50, you can't see that the metal is heating up because metal is thermally reflective. The "hotter" zone in the metal just so happens to line up with where a reflection of the professor would be, and you can even see it move as he bends down.

[@Xaelyrion]

When he said "in 25 years we're gonna look back at now as an inflection period" that hits home. He's right on the money there, in so many ways.

[@b2a1c3d4e5]

Yeah, I wish they had expanded on that a little more. I’d have liked to hear more about the research this facility enables.

[@DasVERMiT]

I feel that way about AI... but the question with that is, will it have helped us or completely ruined our lives?

[@TheRealFoxFire]

As someone from 25 years in the future I can confirm.

[@coin777]

Are you a time traveler?

[@filip9564]

​@@DasVERMiT as someone with alot of experience in machine learning AI i would say that the threat isnt really if AI will take ovee the world. It wont. The real danger is how people can use AI to controll people. Like how china does now but on a larger scale and more advanced way.

[@Jinjukei]

Just a detail: one needs to be careful if you want to correctly measure the temperature of a metallic plate with a thermo camera (like done in the video). The temperature reading does in fact change when the plate is falling even if the temperature of the plate does not change. The reason lies in the principle how the camera works. It collects heat radiation from the plate. However since the plate is also reflecting light from the surrounding like a mirror, the camera collects heat radiation from different bodies in the room as the plate falls. An example is the reflection of the hot body of his companion that you can see. In addition, different bodies need different measurement calibration values in the camera. So, it’s not so easy to determine small temperature changes and say that the reading in fact shows a small change of the plate temperature. It might be an systematic measurement error. Better use a thermistor or something similar.

[@runnergo1398]

How about just a room that is pitch black with no thermal properties?

[@daasdingo]

@@runnergo1398 It would have to be extremely cold as well I think, all bodies emit infrared otherwise

[@runnergo1398]

@@daasdingo You're right. No matter how cold we make something, it is warmer than what we can do.

[@vincentrobinette1507]

Beyond that, are we sure the high static magnetic field isn't skewing the accuracy of the IR thermometer? At the very least, the instrument needs to be kept perfectly still, to not induce stray voltage in the traces within its own circuitry.

[@Jinjukei]

​@@runnergo1398 Good thought. However, the falling plate would still reflect the thermal radiation of the walls that are painted pitch black. Painting a wall in pitch black color does not prevent the wall from emitting thermal radiation. Counterintuitively it becomes a better, actually a very good thermal radiator. How well it radiates depends on its temperature (described by the law from Max Planck). In principle, as Samuel K wrote, you could cool down the room to drastically reduce the radiation (it reduces with the fourth power of the temperature, a rule that is actually used to calibrate the thermo camera). Coolinig down the whole room wouldn’t be very practical though. A better solution would be to paint the plate pitch black so that it does not reflect any light from the surrounding.

[@MisterCriticalGuy]

You should definitely look into bomblocators used in EOD operations and how they use ferromagnetism to locate bombs. It's interesting stuff

[@thewaywardgrape3838]

Now you mention it, that does sound interesting. Especially seeing as bombs are well, delicate lol

[@alejrandom6592]

"I'm a simple man, I see a hole, I poke it"

[@englishmuffinpizzas]

As someone who works in a lab with high magnetic field capacity, I think it’s super interesting how you go from super commercialized 2-8 Tesla magnets (every MRI machine for one thing) to having 45 T be the absolute world record. For a lot of things in experimental physics (most powerful laser, high pressure, coldest temp recorded, most precise atomic clock etc) the record holder is many orders of magnitude larger than the off the shelf stuff. You have to respect how much work is put to get from 10 T to 20 T, and from 20 T to 40 T.

[@clgr1323]

NO, BAD BOT, BAD, SHOO

[@shawncaldwell9318]

Normally magnets are .23T - 3T when they are used in a clinical setting. Anything bigger than 3 Tesla is normally used for research only.

[@toddkeller5497]

@@shawncaldwell9318 this is not true. I work on a 7T magnet for clinical use. (Siemens Magnetom Terra)

[@farrel_ra]

​@@shawncaldwell9318 lmao ure wrong

[@stevendark9567]

​​@@farrel_ra He said "normally" not "Absolutely"... I'd imagine he is correct, that the vast majority of magnets used domestically or commercially is up to 3T. Beyond that would be the exception, not the rule. I see nothing wrong with that statement, he made no assertion that ALL magnets above 3T were used exclusively for R&D so it was pretty clear what he meant given the language he used. Think, before typing, do I wanna act like a 5 year old today? Answer: No.

[@incription]

I was genuinely looking up the strongest magnetic field yesterday! Thanks for making a video on this fascinating topic :)

[@m.h.m7509]

@Don't Read My Profile Picture okay

[@Noname-cp3zm]

​@Don't Read My Profile Picture why are bots made to type this?

[@madanmatcha7484]

@@Noname-cp3zm They can't reply back lol, just flag them.

[@Noname-cp3zm]

@@madanmatcha7484 I know, I'm just confused to why they type this instead of promoting things or something like that

[@UninstallingWindows]

@@Noname-cp3zm Its just a shitty attempt at reverse psychology. Also, putting your scam link in the profile name/comment makes it easier for youtube to automatically ban the account.

[@shoopdawhoop]

Now we need an experiment: bring the sample or YBCO material close by the working unit, and turn it into superconducting state by applying liquid nitrogen (all is handled with styrofoam vials) and then either try to push it off the active zone (and see how much counterforce it can make) or turn off the magnet and see how much of remaining field the superconductor will store.

[@13minutestomidnight]

This was awesome and a lot of fun. Great job, guys.

[@fabianr9394]

In case anyone is interested: MRI machines don't just go "up" to 3T, but there are many in research that go up to 8. There's one in France which is at 11.7T and there will be one in the Netherlands in the future which will have 14T

[@cade8986]

I worked on one in Gainesville that was 11T. The one I work on daily is 3T.

[@alveolate]

they could've gone a bit into how MRI works... it's pretty cool too

[@jeremylentz3907]

I'm doing a senior design project with a 9.4T mri. Many of the clinical use ones are nowhere near that high though

[@jannikb4039]

Everything above 3T is for Research, 3T is standard Hospital Stuff

[@almichaels4128]

What is the benefit of MRI machines having higher T? Is it better resolution or something along those lines?

[@robertozamparini2591]

Hi! At minute 9:52 you want to show the heat produced by the eddy currents with a thermocamera. You can't see that on a aluminium sheet, because that sheet is like a mirror for the ir radiations, so you will see the temperature of the objects reflected on it and not the temperature of the object itself. If you want to see the temperature of an aluminium sheet you must cover it with pvc insulating tape. It is thin enough to reach the same temperature of the aluminium sheet but it has an emission coefficent near to 0.98 so that it can emit the ir radiations and you can see them with the thermocamera.

[@aritramazumder261]

Or paint it black.

[@VoltisArt]

Yep, this was visible towards the end of the sequence when the temp spiked. It was a distinct stripe reflecting from Tim's body heat.

[@GerblerM]

Oh cool, I would never have considered that. Thank you for your comment!

[@bobbydazzler6990]

What is a "thermocamera"? Did you mean "thermal camera"? Has anyone ever described you as "slow" or "special"?

[@metzli5797]

​@Bobby Dazzler spoken like someone who is "slow" and "special".

[@Martin-hb4il]

I really respect people that look beyond their own lifetimes. Like my great grandfather that planted an apricot tree that I eat the fruits of.

[@Azureus8389]

is the heat signature drift 9:45, also an effect of the high magnetic field on the heat camera? the body and metal plate heat seems to be out of place, just curious

[@BoxKingKevin]

1:38 "May I finger your magnet hole please?" is the most scientific achievement I have ever witnessed and I'm so proud of Veritasium.

[@TheNukebooster]

Tim Murphy also seems to harbor an impressive force himself, those arms are packing a punch. But in all honesty this was amazing, thank you for the video and theanks to the Field Facility crew for supporting you in making this. Really amazing content, as always.

[@vantruongthi9105]

ok

[@ferencivanics9980]

Training happens with the magnet on. He is using really small weights.

[@johannesdatblue4164]

im sure hes power lifting metal bars on the magnet xD

[@IvanAndreev91]

Amazing video! Thank you! Enjoyed so much)))

[@ericowings8310]

This is less than 10 minutes from my house. I pass by it every day starting my work week.

[@MrXManQ]

You are a large reason I chose to study physics. I graduated from FSU in 2020 & got to see this bad boy in action a couple of times. I love that you made this video, I just wish I was still there! Go ‘noles baby!!

[@davidshotwell2807]

KZbin says I'm the 69th like Buut, it's youtube

[@KarlKarsnark]

Go Noles!

[@simsmith78]

Working in the High Field Magnetic Lab in Grenoble France, I work with a 16T superconducting coil every day, and I've also experimented on up to 36T, and I've gotta say, there are a lot more things you can have fun with in these sorts of labs. Soon we'll have a 43T coil here too!

[@dimasuracalvinjake683]

go lie somewhere else

[@wfemp_4730]

@@dimasuracalvinjake683 On what evidence do you make that assertion?

[@turolretar]

@@wfemp_4730 he said to lie somewhere else, because clearly that guy works too hard! I mean, imagine constantly working in such strong fields. A little break wouldn’t hurt. Just people looking out for each other

[@dementionalpotato]

@@wfemp_4730 Dude really believes that it’s that unlikely for some seemingly random person to have a fulfilling and interesting position in stem that they are passionate about. It’s actually extremely sad when you think about it.

[@Gakulon]

​@@coquillage8211lawyer named finger:

[@paulhefner2813]

I love the confidence that these people have concerning long term effects. Scares me that they are so confident.

[@thatonedynamitecuber]

I love the Map Men appearance at 6:36

[@Srfingfreak]

I used to work in Innovation Park near there. Before I took that job, I had worked in a machine shop, which resulted in my hands being somewhat full of steel splinters and filings. When I walked past the magnet bays, I could actually hold my hands up and "feel" the contours of the magnetic field. It was pretty cool, but only lasted until the steel in my hands rusted away.

[@Pepino8A]

You had a build in compass

[@DarcyRyder2010]

Are there any effects of having metal rusting inside you?

[@MadSceintist]

@@DarcyRyder2010 that's not how it happened. The human body will dispel foriegn fragments such as that unless it's below the muscle layer

[@Srfingfreak]

@@DarcyRyder2010 high blood iron content I guess

[@Srfingfreak]

@@MadSceintist yeah it didn't last long, just until my skin grew out or the material rusted

[@ismailnurmaghribi1702]

17:13 play free bird solo...

[@Traumatree]

When will there be Veritasium universities and colleges so kids can go learn in a fun and practical way? Great video once again!

[@fridaycaliforniaa236]

This is really strong. Oh, and the magnet packs a punch too...

[@tarevamarvin]

14:42 bro is in the character creator

[@sriramangajala]

Yes 😂

[@FlaviusFlav]

Veritasium consistently has the best content of any KZbin channel. Thank you again, Derek and team!

[@SkyLordPanglot]

10/10 content. Movie material, unique and interesting stuff. Science at the highest level. Not many of these today. Thank you from me too. If there were more people like this in the world we could progress so far.

[@HorseshitDetectionAgency]

its far better than watching all the pewdiepie idiots on here

[@miklomorales4768]

For sure including vsauce team and smarter every day

[@savagepro9060]

@@kingsrevenge9234 Yes, but, everyone else will also be the greatest artist ever . . . . DALL-E 2

[@FlaviusFlav]

@@kingsrevenge9234 yes edit - just looked at your channel - Diamond's Interlude is 🔥 do more of that

[@xudros3534]

My university professor used this video as an example, thats awesome

[@Giannis_Sarafis]

What an interesting video! I was always fascinated by magnets and magnetic fields as a child. Thanks for sharing. I have to add a minor correction: there were two areas called Magnesia in the ancient Greek world, one is the one you mentioned and the other was in Minor Asia, nowadays in Türkiye, where Greek colonies had established from the 8th c. BC. The second one was the place from where magnetism took its name. There is still a city holding almost the ancient name, Manisa.

[@RandomUser2401]

I for once am really surprised that Mricans use Tesla, sensible units, for the field strength. Really was expecting a custom unit once set by her majesty the queen.

[@bartudundar3193]

@@RandomUser2401 "This magnet right here is strong enough to lift 0.19 Football stadiums 2 inches high."

[@RandomUser2401]

@@bartudundar3193 ah snap sorry, they somehow always find a way to sneak in nonsense units even into scientific fields. Forgot about that skill for a moment. My bad.

[@cancan-wq9un]

You mean conquered? Because there were people living there before Greeks took over. Some of those settlements have 8 thousand years of history.

[@goombacraft]

@@RandomUser2401 Usually even American physicists use Metric units

[@xaviertheoret6401]

Hi Veritasium, at 9:39 I do not think you were measuring the sheet temperature. I have been playing with a thermal imager for a month and noticed most metal (even non polished ones) becomes mirror like in Thermal. So what you were measuring was the ceiling reflection not the sheet itself. Note: you can see the thermal reflection of the person holding the sheet at some point. Example of unpolished metal turning mirror in IR found at home: kitchen sink, an unpolished canadian dollar, the brushed metal of our oven, etc.

[@dariofagotto4047]

The plate heating up on the camera is mostly light reflection, it's evident since where you point you can see the shape and it's not really distributed as one would expect, I mean it does heat up, but what's shown is probably not related to the eddy currents

[@joaohenriqueneuhaus2023]

7:16 That idea is so crazy it's amost the equivalent of making a enchanted tool in a fantasy world. Like, goes through the process, and now you have a PERMANENT magnet

[@joaovictorprangel]

I have no words to describe how good Veritasium videos are

[@Frontier327]

Was skeptical of their quality with the terrible production of the Rods from God video but this really shot Veritasium back up for me. Stellar video.

[@BleedForTheWorld]

It's propaganda funded by Google.

[@botsrik5627]

"The no you don't law" he's just good

[@VeganSemihCyprus33]

You are being fooled 👉The Connections (2021) [short documentary] 🔥

[@schorso]

Hey Derek, a small correction. Type 2 superconductors (i.e. all which undergo the transition with liquid nitrogen) actually don't float due to the Meissner effect, since the forces that the superconductor experiences in that case don't allow a local stable minimum (hence it can't float). The levitation effect is cause by the flux pinning, since the type 2 superconduction kind of "freeze" the spatial distribution of the external field.

[@nickyp1435]

Nerd

[@surVERXD]

That's really interesting! I had no idea that the Meissner effect alone couldn't explain the levitation of type 2 superconductors. Could you explain a bit more about flux pinning and how it allows for levitation? From my understanding, it's the trapping of magnetic flux lines within the superconductor that prevents it from moving or falling, but I'd love to hear your perspective.

[@roberthousedorfii1743]

i need a lot dumber explanation of that. Really.

[@surVERXD]

@@roberthousedorfii1743 **TLDR: Read the summary at the bottom of the text if you are in a hurry Type 2 superconductors are materials that can conduct electricity with zero resistance when cooled to very low temperatures, typically with liquid nitrogen. When a superconductor is cooled down, it experiences a phenomenon called the Meissner effect, which causes it to expel any external magnetic field. This effect alone, however, cannot explain why type 2 superconductors levitate when placed above a magnet. The levitation of type 2 superconductors is actually caused by a different phenomenon called flux pinning. This occurs when the superconductor traps the magnetic field lines of a magnet, effectively "freezing" them in place. The trapped magnetic field lines create a stable equilibrium that allows the superconductor to levitate in mid-air above the magnet. **So, in summary, while the Meissner effect explains why a superconductor expels magnetic fields, it is flux pinning that allows for levitation of type 2 superconductors above a magnet.**

[@JPspinFPV]

The difference between someone who knows, and one who asks people who know.

[@prasadchowdarysadineni807]

He should have talked about ferromagnetic, paramagnetic & diamagnetic materials he was using throughout the video,Aluminium is paramagnetic,copper is diamagnetic like that

[@stein1385]

This is excellent. Tysm 👍

[@JamshadAhmad]

17:33 I see a long-lasting effect right there sir.

[@Dark_Empath506]

It will make a man need a bra 😂

[@theuntitledgoose]

17:46 *_free bird intensifies_*

[@loganziggas9069]

The Maglab is in Tallahassee FL and is a joint operation by Florida State University, University of Florida, and the Los Alamos National Laboratory.

[@insertcreativenamehere492]

Gravity: time to make this plate fall over Lenz: Nuh uh

[@Sapojnik-]

17:40 THE IRL HORIZONTALLY SPININNG RAT ?!?!

[@BambinaSaldana]

Why don't you flyyyyyyyyyyy higggggh, Freeeeeeee Birrrrrrd? Yeah! *_epic guitar duo_*

[@jordanbennett6461]

I loved touring this place a few years back. It's awesome to see the big magnet running. I don't think it was shown but also the water filters for this place are huge! Takes a lot to keep that magnet cool. Never realized just how insanely powerful it is till now.

[@frankiesomeone]

First thing he thinks of seeing the machine is "can i stick my finger in the hole" 😂

[@HAYD101]

Fix your overlay on the FLIR™️ and that shot is golden ✨️ 👌 💛

[@callmechaf1165]

Could listen to that guy explain forces for hours on end. Fascinating stuff and his demeanor of explanation is intriguing.

[@cometobrazil9916]

3:29 Love the *Comic Sans* Font

[@alexbale6592]

Interesting video. Very nice to discover scientific experiments. BTW this ad with Google was the most interesting ad I’ve seen inside a video

[@formattmusic1359]

Its amazing how the formation of the ferro-fluid is so uniform. I have a question, can you create a powerful enough magnetic field to intercept metallic missiles, I'm asking if if big magnetic field could work as an Anti-aircraft or projectile field. The premise is that Star Wars and Star Trek both use a variation of magnetic field to create a deflector shield to prevent damage to their ships. If shields are possible, will a magnetic field be the underlying physics that govern it?

[@MrGatlin98]

11:15 This is exactly why magnetic brakes for roller coasters work so well. The faster they're going, the faster they stop. The slower they're going, the slower they stop.

[@jotha885]

small correction: The typical modern-ish clinical* MRIs are 3 Tesla, but 7T human scanners are getting quite common outside the hospital and there are some recent developement like the Iseult project in Paris where they recently ramped-up their 11.7T human scanner. Also, smaller scanners (preclinical scanner a.k.a. "small animal" scanners) have reached 7T and 9.4T long ago and I've seen up to 16T preclinical scanners in a research setting. It goes without saying that creating a homogenous enough field of a given strenght gets much much harder the bigger the scanner is.

[@jlucky84]

Do the resulting images become more accurate at higher fields? Not in the medical field, but you piqued my curiosity :)

[@fetilu0975]

​@@jlucky84 They do but you may need to correct for the deviation induced by particular materials like bones. For instance at my uni (Liège, Belgium) without said correction you can't see the temporal lobes well because the skull around it is too thick. Also you get a very small space which is impractical for bigger people (including obese people who might be at higher risk of health-related problems so that's dumb) and you feel dizzy around the scanner (even beyond the Farradet cage) lmao

[@pbs1516]

@@jlucky84 Absolutely, the resolution increases with the static field, hence all the work done to pump it up. In one of the imaging mode, you excite the protons of the matter, causing them to have a precession motion that you detect. More field means more "movement" (Larmor precession), hence the better image. Modern MRI, to my knowledge, all use superconducting magnets, which was mind-blowing for me when I learned it. If I remember correctly the visit I've done in a place like Jotha885 is describing, very high static field in MRI did bring some issues, such as getting shocked if you move even slightly, as you get non-negligible eddy current induced in (for instance) your blood. As they were working on preclinical imagers, they just use anesthesia, but it might not be practical with humans...

[@error.418]

small correction: most MR scanners are 1.5T or 3T, don't know why he didn't just say that. but yeah, those are just "most" and there is all the other stuff you mentioned.

[@carlmanis879]

45T when it ramped up does it effect compass's from miles away. When you turn it on does the core of the earth change in some way they say it slowing down.