World's Strongest Magnet!

[@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!

[@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

[@Snigdhorup]

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

[@maxwyght1840]

@@Snigdhorup 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.

[@thewhitefalcon8539]

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

[@PeterDB90]

@@Snigdhorup 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.

[@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 🥴

[@SirDavidAsher]

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?

[@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!!!

[@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.

[@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

[@mathematicskid]

or eat off a paper plate and save $1,000,000

[@souravshaw4844]

classy🤣

[@nhatho1723]

I was thinking of those Minecraft zero damage fall damage boots the whole time. They invented Feather Falling IV

[@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.

[@gownerjones]

​@@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.

[@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.

[@oldbot64]

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

[@WiseandVegan]

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

[@MROIY]

I agree

[@BelindaShort]

@@oldbot64 Sometimes people are good at knowing things but not explaining 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!

[@firewoodloki]

@Trevor Sequino 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

[@David.Murdoch]

Except for the ones who kicked Pluto out of the planets club.

[@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

[@zack32460]

Tim is great and a bodybuilder.

[@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.

[@WiseandVegan]

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

[@TimeBucks]

This is so cool

[@UKThisTheNew]

👍

[@rakhimukherjee6138]

Nice video

[@souvikmondal8575]

Nice

[@vasilemariangiarap7005]

Super tare

[@nishatanwani6460]

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

[@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

[@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.

[@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

[@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.

[@WiseandVegan]

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

[@ImDemonAlchemist]

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

[@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

[@WiseandVegan]

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.

[@466rudy6]

World's Strongest Shirt Sleeves

[@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!

[@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.

[@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

[@Flesh_Wizard]

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

[@leon.690sm9]

@Josias Lourenço 🤨

[@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

[@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..

[@白キロ]

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.

[@CSNCSNCSN]

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

[@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.

[@WiseandVegan]

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

[@josepancracioribeiro2517]

Amazing!!!👏👏👏👏

[@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

[@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 :)

[@OneMasterDisaster]

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

[@RGRundeRGRound]

[@Pikachuuuu0000]

Hahahahaha

[@Frosty_Playz5910]

[@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

[@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.

[@amostarca9758]

Whoever edits your videos and does all the highlighting and diagrams is very on point with what actually matters to remember and how to make the learning experience truly valuable. Congrats on making such qualitative and well-thought videos! Not being shallow and doing videos for the sake of doing them is rare on youtube and we truly respect 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)

[@iPlayDotaReligiously]

​@@shawncaldwell9318 lmao ure wrong

[@SDarkVader]

​​@@iPlayDotaReligiously 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.

[@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

[@incription]

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

[@mohammadhoseinmollaei]

@Don't Read My Profile Picture okay

[@Anonymous-cp3zm]

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

[@madanmatcha7484]

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

[@Anonymous-cp3zm]

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

[@UninstallingWindows]

@@Anonymous-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.

[@iLLadelph267]

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

[@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!

[@wfemp_4730]

@Dimasura, Calvin Jake 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:

[@highdefinist9697]

​@@dementionalpotato Or maybe it's a Russian/Chinese troll, who wants to undermine the West, by undermining interest in science. Well, of course that is quite unlikely. But I would not completely rule it out, given how much trolling there is in political topics...

[@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.

[@WiseandVegan]

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

[@gesamtszenario]

Florida is the gunshine state, after all.

[@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?

[@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.

[@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.

[@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!!

[@Boldcheesecake1029]

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

[@KarlKarsnark]

Go Noles!

[@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.

[@kuroyamichi]

that's one JACKED scientist.

[@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

[@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.

[@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.

[@deawilld4346]

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

[@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

[@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".

[@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

[@gallium-gonzollium]

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

[@callmechaf1165]

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

[@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.

[@billyvsbilly1]

Magnetism is just wild. Superconductors and their interactions with magnetic field is really crazy. I love it

[@jerryaab4714]

Congratulations to Derek for being sponsored by google, you have come so far as a creator!

[@MaskOfCinder]

He’s the only KZbinr I’ve seen that gets sponsored by them.

[@Muonium1]

Google blows. They're the exact opposite of their once admirable company motto of "don't be evil". They're nothing but now.

[@Oneiroi0]

​@@Muonium1 said by average joe in comment section video sponsored by Google in KZbin platform which by the way owned by Google.

[@HM-wi4ou]

@@Oneiroi0 Ok Bootlicker

[@zes7215]

wrrr

[@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.

[@jaber4life]

Watching the plate heat from eddy currents is so fascinating. Truly wondrous. That is the work of nature

[@yecto1332]

I love how safety isn’t much of a concern in this lab

[@mjkhoi6961]

it's Florida, what do you expect?

[@mikelitoris6315]

Lol why are you judging a labs safety protocols off an informational video which barely went over any safety protocols.....

[@jackthegalaxy8897]

I know FINALLY I CAN KI- Uh what I know haha funny.

[@jackthegalaxy8897]

@@mjkhoi6961 oh

[@jackthegalaxy8897]

That explains it

[@davidbetancourt4028]

Thank you for this video. I hope this inspires a lot of kids in middle or high school to pursue engineering. Fascinating. I love being excited about the future. This helps.

[@agaigreen]

everyone is inspired to be big as that engineer

[@davidbetancourt4028]

@@agaigreen I wish everyone would be that inspired. It's just the trend towards non-STEM jobs has been unfortunate in the US. My original statement above was more of a wish.

[@theralfycs6188]

sponsored by google thats actualy crazyy

[@JaySt8y]

Studying for the MCAT while working full time and finishing grad school. I've been using your videos to help see practical application of these crazy physics laws I've learned years ago in undergraduate school in action. And Derek Muller, or better yet Mr. Veritasium, you are inspiring, this content is amazing, and it makes me wanna change the way students learn and absorb this information in.

[@SarangSamnerkar]

you learnt this in undergradd we learning this in high school💀

[@glmorten]

@@SarangSamnerkar They teach this in almost all high schools. The depth of how deep you go depends on the level of school you are in.

[@sangvoba4340]

ok

[@SarangSamnerkar]

@@glmorten YEA also had a doubt which maxwells eqaution adds magentic feilds? 18:24

[@chancellorpalpatine7486]

@@SarangSamnerkar No high schools in my area cover E&M, but its standard in any stem undergraduate program. I also feel like you wouldn't have a true appreciation for eddy currents without vector calc, another course that isn't typically taught in hs

[@papermarioish]

I've done research here as a user. I did not get a chance to see the 45T hybrid magnet in action but was able to take some pictures. Actually worked in a lab just a few cells away from it for 4 weeks. This is a very cool video, and I love the science outreach being done here, although it does stress me out to see them playing around the hybrid magnet, especially after all that safety training I had to take before doing research at the NHFML. I actually ended up accidentally demagnetizing my hotel key card a few times working in this lab and annoyed the front desk of my hotel lol. Thanks for the video and Tim is a great guy, him and the administrative office were awesome :)

[@DuncanFox64]

I have worked with this magnet before! It’s so cool and so loud when you run it. I’ve also met Tim and he’s such a cool guy and gave us access to this magnet after our 41.5 T magnet was shut down.

[@TheBelldiver]

We're you working in molecular refinement or what I call an atomic distillation process?

[@aeb830]

@@TheBelldiver *were

[@noahthegod1267]

@@aeb830yeah autocorrect is weird

[@ericowings8310]

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

[@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.

[@TheMilanMovies]

It was years ago when I saw a video of a “levitating” strawberry caused by a a giant magnet. I never figured out where that magnetic was or how it worked until now. Thanks for that! Really cool to see how this massive thing operaties and the power it consumes

[@madanmatcha7484]

The world has so much potential, and it is great to find out about it.

[@cappyjones]

​@Don't Read My Profile Picture I won't. 😁

[@satyamshah1729]

​@@cappyjones report to @don't read my comment!!!

[@multiarray2320]

youre goddamn right

[@bazarleam2593]

Yea. Don't be so hopeful. That's in Florida.

[@madanmatcha7484]

@@bazarleam2593 whoops

[@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.

[@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.

[@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.

[@Hieb]

The quality of your videos, your joyful character that is enthusiastic about the topics, and notably your transparency when it gets to disclosing sponsorships of videos are remarkable. Thank you for producing videos on this platform, truly. Nobody is infallible, but you aim to be your best and I respect that so much.

[@Profile-pictureX]

I think this is the first time I have not skipped a sponsorship in a video

[@basharkernel8992]

I just want to say that the way you are making videos now is so much better than before. I’ve been a a subscriber from 2015 and this video is one of the most informative videos that I have ever seen on KZbin in terms of how much information I got per minute. Great job 🙏🏻🙏🏻

[@justpaulo]

I don't dislike his videos now, but I also appreciated when he would do riddles and go outside asking questions to people about physics, riddles included.

[@katyungodly]

I have to agree, after he went trending for his videos on why his reach was plummeting, his reach skyrocketed, as did his production quality

[@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.

[@LghTsKnJames]

In the Navy I worked on Deguassing our ships to limit our magnetism towards Mines. Learning about eddy currents and how induction was amazing

[@frankiesomeone]

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

[@joelvanwinkle5976]

That floating strawberry and raspberry blew my mind. I’m glad to see these people having fun while learning stuff to benefit humanity

[@eastofwarden]

I love how more and more science channels are covering superconductive properties.

[@wolfgangricky4476]

They're sensibilising us to U.F.O's 😄🛸

[@WiseandVegan]

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

[@lucky_lol]

10:40 Very Nice interpretation of lenz law!!!!

[@simon5143]

I recently had the honour of interacting with an MRI machine, and not for medical reasons. The technician let my group (we were three students) interact with the 3T magnetic field with first a tennis ball with a mutter inside and then a “~20 cm ferromagnetic rod” (I can’t remember the name of that tool). It was kind of surreal interacting with such a powerful magnetic field, especially with the metal rod.

[@timb7342]

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

[@cometobrazil9916]

3:29 Love the *Comic Sans* Font

[@apemancommeth8087]

Definitely a fun place to hang out! Can’t wait to see what’s learned from and new things are created as a result of this spectacular experiment!

[@suspoocha]

"sponsored by Google" what a legend

[@agrawalnaveen]

Another Great video, Versatium! The Magnet Man is truly fascinating, and his explanation of magnetism is mind-blowing. It's amazing to think that they use such a high amount of electricity to generate 45 T of magnetic field. I'm curious to know if there are any health implications for humans working with such strong magnetic fields. Thank you for another fun-filled and learning episode!

[@Metal_Master_YT]

Health implications? its mentioned in the video: 17:30

[@prdelvonijakokonvali]

@@Metal_Master_YT Sure, but apart from the inner ear polarization, the whole effect was related to water "content". I would think that there would be some effect considered regarding an iron concetration in the (human) body...

[@brandonbehc]

Yes, unfortunately must of the times in physics water is a short trick to explain what they cannot understand. In fact, a magnetic field aligns particle spin precession and slows time rate

[@Metal_Master_YT]

@@prdelvonijakokonvali the iron in the human body is not affected significantly by magnets. its a misconception that an iron containing substance must be inherently magnetic (ferromagnetic or ferrimagnetic). in practice blood weakly repels a magnet. the general reason for this counterintuitive aspect of magnetism is because magnetism is a macroscale phenomenon, (compared to individual atoms) so individual and isolated atoms of a magnetic material will not have the magnetic properties of the whole (the pure solid substance).

[@JoelLinus]

@@Metal_Master_YT That makes sense

[@VaidikRuparel]

VERITASIUM NEVER DISAPPOINTS! I was waiting for a video from you since two weeks now and you finally uploaded one and it was so interesting!! You never fail to fascinate, and i always learn something new from your videos!! Thanks a lot Derek

[@silverlukey]

Lol, i enjoy the videos and Derek, but the space rods video really was a disappointment xD

[@VaidikRuparel]

@@silverlukey he explained the thing pretty well so i sure was fascinated at the amount of power thin rods at high speeds can generate!

[@dragonmudd]

A fun induced currents demonstration you could also do is to compare a conducting ring to a broken conducting ring, i.e. a ring with a break in it so that it's not a complete circle any more. The broken ring won't be able to generate the same eddy currents in it and will be noticeably less resistant to motion.

[@paulbrouyere1735]

@@The_Evil_Eye I believe the closed ring is important. It would be a nice test to drop a magnet through a copper tube and through a construction with copper rods. I know the tube slows down the magnet a lot. Never tried the other test.

[@dragonmudd]

@@The_Evil_Eye It is important. There's a great demo I used to do for intro E&M that demonstrates it comparing a copper cylinder with one that has a small line cut down the side. The currents are induced at all length scales, but superposition means that they all add up to being equivalent to the largest length scales. If you can disrupt the largest length scales, then you reduce the largest eddy currents.

[@Megadriver]

Science demonstrated in a fun way is the best way to learn. I hated physics as a kid, because our teacher was boring and just read the dry text to us, straight from the textbook and never explained any of the laws of physics, never demonstrated anything. We were just told it is what it is and this meaningless bunch of letters, numbers and weird symbols (the equation) explains it. The tests wanted us to explain, but we were never told why stuff happens and how it works in the first place. But as an adult, I mainly watch stuff about science - physics, engineering, computers, electronics, rocketry, etc... and it's very interesting. I'd watch a documentary about something like the transistor and it's history over the newest superhero blockbuster any day of the week!

[@-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

[@JamshadAhmad]

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

[@Dark_Empath506]

It will make a man need a bra 😂

[@XMcBainXUSA]

Great guest, he did a fantastic job distilling complex information for average people!

[@YeezusGhoul]

02:00 I'm pleasantly surprised this gentleman is using metric with such a thick accent. Respectable

[@alexanderpolasek2200]

Fascinating and very nice to explain Lenz's law and materials magnetic behaviour to students and the general public. I have been there a long time ago. Please post more videos like this one!

[@dlinnoedlinnoe]

One thing that's really amazing is that people can be present and act in such strong conditions without any harm. We are very vulnerable to many other influences - light, heat, coldness, sound, radiation, gravitation, etc, but 45T - no, nothing, let's have another beer. Thank you very much for the video! Very interesting! Well, and the magnets are always magic :)

[@car9167]

It's a static magnetic field and we humans are slow. Beside there is not much with free electrons (like metals) in our bodies. Maybe some electrolytes... What matter is the rate of change so if you fly past magnet at a high speed maybe something would happen. If you have a wire 1 meter long with 1 meter/sec speed in 45T field at the end of the wire will be 45V. 100 m/sec you have 4,500V

[@draculakickyourass]

You would build strong arms lifting the beer cans in 45 T.....it's like going to gym,hahaha.

[@VoltisArt]

Kind of ignoring the exponential drop-off here. The 45T is only a centimeter-tall column inside the bore. We can get pretty close to thousands of volts or degrees, as well, if the source is isolated to a small point.

[@bobdeadbeef]

@@VoltisArt It's not exponential. For a dipole field like electric or magnetic, it falls off the inverse cube of distance. Or rather, it approaches that at the limit, at distances large compared to the scale of the dipole. Closer in, it falls off even less ("near field"). Still, inverse-cube is faster than the inverse-square we're used to, for EM radiation, particle emissions, sound, or gravity. 40 years ago, I was doing some programming at the MIT Plasma Fusion Center, and when the tokamak magnet fired up, the text on my VT100 CRT screen would twist and turn. That was about 400m or so, so field intensity on a scale comparable to the deflection coils on the neck of the CRT. Bigger field, more distance to act on the electron beam, so maybe about 1 order of magnitude less, but still impressive. Still, nothing in our body accelerates electrons w/ 10-20 KV or whatever. Getting an MRI at 1T or so, is noisy but boring (unless you're claustrophobic, or have anything ferromagnetic in your body). Flipping the nuclei in your body leaves the chemical bonds alone. but is a pretty dramatic effect when you think about it! (Tho it's the microwave pulse that gets them spinning, it's the field that gets them oriented). Also consider the sheer scale of the power supply required.. I used to play with 15 KV neon sign transformers that ionize air handily. The Pacific HVDC intertie from Oregon to LA operates at +/- 500 kV, or 1 megavolt between wires. Often, high voltage transmission liines run 3 conductors as a group with spacers, increasing the effective diameter, so the 1/r increase in field intensity on a linear conductor isn't as intense, reducing ionization losses. Even veterinary medicine uses MRI now. The latest generation use 3T magnets. Pretty impressive for a technology only 50 years old w/ fields 1/15 the strongest ever generated (on a continuous basis. There's a 100T pulsed magnet at Los Alamos, and even higher fields have been produced, but they self-destruct. A 1000+ T magnet was demonstrated in Tokyo a few years back, which is about as big as you'd want to do indoors. Beyond that, you use explosives to compress the field. I think the record is about 2800 T. I don't expect to see practical applications of magnet that strong! Magnets like this are a lot more interesting, IMHO.

[@KibyNykraft]

@@car9167 There are a few individuals in the old Guinness book of records who attracted regular metal objects with their bodies automatically. But of rather light weight.

[@tarevamarvin]

14:42 bro is in the character creator

[@sriramangajala]

Yes 😂

[@tncreations1267]

Imagine if a coin or some iron filings got stuck to the magnet 😂

[@thegamesforreal1673]

I study at the university where they first levitated a frog. They kept the little critter around as a laboratory pet until it died of old age. I got to see the frog's terrarium myself, but not the frog as it had already passed away at that point... Little guy had a nice green terrarium with pond and everything.

[@Jcron13]

In the Netherlands?🇳🇱 That’s pretty cool!

[@Sapojnik-]

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

[@BambinaSaldana]

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

[@noussitresor56]

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

[@The-Alien.]

Bro Google decided to sponsor this guy even though literally all smartphones have it and consider Google a system app