Massive 600 kg (1300 lbs) Neodymium Magnet [4k]

We will show you a massive neodymium permanent magnet assembly weighing more than half a ton. Also, check out permanent magnet chair we built: • Permanent Magnet Chair...
These magnets are made of rare earth elements represents the strongest class of permanent magnets. In this video, we first will see what happens when you approach it with ferromagnetic materials (like steel), and then afterward we will explore how conductive metals behave in a strong magnetic field.
Here is a wrench and a scale for measuring the pull of magnet which reaches 25 kg while the wrench itself is only 1 kg. On larger ferromagnetic objects attraction can easily reach hundreds of kilograms.
Next up is a hammer! Note that I added 5 cm (2 inches) layer wood so not to damage the surface and to be able to easily remove it. Even with this added distance pull force is around 40 kg.
Afterwards, a flexible iron sheet is placed to the magnet which illustrates the distance where objects are visibly attracted. On larger ferromagnetic objects attraction can easily reach hundreds of kilograms.
The permanent magnet of such size is stronger than the earths magnetic field in a radius of 4 meters around it and can turn screens of a laptop from 1.5 meters. Ferromagnetic objects from iron are drawn to magnet form half a meter away as illustrated with iron sheets.
We continue experiments with placing a ferrofluid on the magnet. This reveals the spikes on the surface. These spikes are acting (pointing) like magnetic field lines so in a sense you can visualize the magnetic the direction and strength of the magnetic field. Sometimes the camera loses focus because of the strong magnetic field interferes with electronics and sensors. The ferrofluid contains very tiny magnetite particles, which act as tiny magnets and when the external field is applied they aligned in “spiky” structures pointing in the direction of the magnetic field vector. When in close proximity to poles the magnetic forces dominate over gravity making so the fluid can defy gravity. If I were to let, go the container it would fly towards the pole of the magnet to the spot with the highest magnetic field intensity.
Next up we take 4 kg copper sheet and when we throw it towards the magnet it rapidly slows down. When the plate is getting closer to the magnet it moves noticeably slower. All that happens because of the induced current in the copper sheet. Copper is an excellent electrical conductor and when it is moved in a magnetic field, the changing flux creates eddy currents according to Maxwell’s-Farady’s law of induction. In short, these currents create an opposing magnetic field and overall damps movement of copper and that is why it is extremely difficult to move the copper sheet next to a magnet.
And this simple demonstration perfectly showcases the effect of opposing forces caused by induction. Normally plate of such size would fall down in a second, however, since it is placed in a strong magnetic field (which changes in the plate during fall) it takes almost 20 seconds for it to hit the ground.
In the end for a bigger effect, we took a 20 kg copper sheet and rolled it in a cylinder and which we dropped on the magnet. The first attempt was with a couple of centimeter gap. The copper sheet is slowed down up until it reaches the center of the magnet. At that point, the magnetic flux becomes negative and current changes direction. In the second attempt, we shrunk the gap to 5 mm. In both cases, it is overwhelmingly slowed down by induced currents.
Credits to:
Antra Gaile & Mikus Mīlgrāvis for assistance with video production
Viesturs Šints for sourcing the ferrofluid
Toms Beinerts for sourcing the magnet
● Music Released and Provided by Tasty
● Song Title: Konac - Away
● Music Video: • Konac - Away [Tasty Re...
● Label Channel: / tastynetwork
Made and narrated by researcher Reinis Baranovskis

[@MisterRorschach90]

Why do big magnets make me happy

[@sauravsharma3967]

Bcoz we used to play with it in our childhood

[@keatonbrier]

Because any magnet makes me happy

[@bubblezovlove7213]

Me too! They are just so endlessly amusing, fascinating, fun, dangerous, powerful invisible forces... They just have so many good qualities!

[@stephenmcbride8859]

because they are the key to the universe!!

[@8891Z]

@@bubblezovlove7213 exactly

[@Renzoganviolin]

only 342 views? This deserves to be over 500k views

[@Sol_Nivis]

66k lmao

[@lubisztosukoooo]

Deservs what?Thats just tricky name of video..this is not one nagnet 600kg but much more in one set..thats not make this magnet stronger..so this magnet is strong as strongest magnet plate.

[@vijaylaxmipareek6297]

157k now if u will see at the day he uploaded of course their will be less

[@arturoherrerialeon1404]

I only watched 200 times

[@racing_mntage1584]

​@@arturoherrerialeon1404aww that isn't much😂

[@Tmanstomp100]

Imagine making a speaker with this magnet...

[@asepali9067]

Just imagine how loud those speakers can be

[@cj-nj2tm]

@@asepali9067 just imagine how that loud speaker kills human

[@taylorwright3071]

@@cj-nj2tm I’ve been thinking of making a room with a speaker(s) than can just pop your blood vessels, think it would be big enough? lmao

[@innovationsforall]

Great Scott!

[@Tmanstomp100]

@@taylorwright3071 Man we can do it together I like loud stuff lol

[@gingersam851]

How on earth did you put this together? I watched Brainiac combine two 6"x2" magnets, and that was a major operation.

[@MHDTechnologyLaboratory]

Assembly is indeed a challenging task. We use some helping machines and our know-how :)

[@7XHARDER]

@@MHDTechnologyLaboratory when I become a millionaire, I'm gonna make a giant magnet cube and force opposing ends together, it might be the secret to infinite energy

[@ronaldd2154]

@@7XHARDER? And you cant do that with a smaller, hand held sized one? 😂

[@Reactiontime6000]

@@7XHARDER It’d do the same as small ones and infinite energy? No

[@___-vz7mp]

@@7XHARDER why not engineer a powerful electromagnet so it is safer, cheaper, and overall more effective? The electromagnet would have to be a skinny, long cylinder wrapped / surrounded in a supercooling fluid or magnetic insulator, making the poles of the magnet even stronger. Also you would need an engineered truss frame to hold the magnets together.

[@attoblaze3395]

you deserve much more recognition man this is awesome!

[@Bosnia_Magnetfishing]

These magnets are awesome for magnetfishing !

[@ninjawe337]

Same magnets size repulsion test will be great test.. how strong can they can repel to each other

[@MHDTechnologyLaboratory]

We have done it with individual 50x50x95 magnets here: kzbin.info/www/bejne/nGmkppqYe7yaY9U

[@shanthisankaranarayanan3098]

Assembling and dismantling this set up may be fatal😖

[@ReiherAllendi]

I'm scared just watching it

[@mynameis5427]

What if you have two of these placed in the same room, but they are oriented such that they have the same poles facing upward? I would love to see the fun experimentation that could be performed with large repelling magnets.

[@panzerfaust480]

Gotta say, this is super cool. I recently got some 40x40x20 mm cubes, man are they powerful, (though nothing close to this). I will say that it is way cooler in person when you can actually play with the magnet yourself. I have a 1 kilo bar of silver that makes the magnet have incredible resistance to motion 1/2 inch away. (bet you could throw a bar of silver at that magnet and not even touch it). Recommend everyone that likes magnets gets a few extra powerful ones (only like $40 shipped to get started), you will not regret it, unless you hurt yourself. Cheers

[@realcourte]

Would like to know how ferrofluid react to those!!! How many liters they can "hold" ? . :)

[@jagwarjahnoon469]

With that type of energy I’d have videos That show the best and highest potential For the better future

[@Matt-tj1qk]

Excellent visualization of magnetic fields

[@davemwangi05]

the price of that is more than a tesla model 3

[@fancy3774]

Do you mean that magnet is powerful than tesla model 3

[@davemwangi05]

@@fancy3774 LOL. I meant if the magnet weighs 600 kg, it's gonna be more expensive than a Tesla.

[@GrenPara]

Hello, Great video thanks for sharing. I have a question about that magnet, is it strong enough to pull black tattoo ink out of skin since the ink is iron? Maybe you could have a piece of pig skin tattooed with black ink and see if magnet can pull and ink out.. Just a suggestion

[@AlbiniaYT]

I had a small this magnet and it was strong as heck

[@johntheux9238]

I just ordered a D200mm H50mm 12kg (weight, not strength) magnet. Hope I won't brake my fingers ^^

[@richcollins513]

roll it down a steep street with parked cars in the next video please

[@tilidie5272]

lol oh god imagine the destruction

[@Egzile]

@@tilidie5272 actually probably not much destruction bc it would stick to something perty quick id imagine. Maybe a massive crater in whatever it stuck to tho...

[@hyparh]

Spin it at 15k rpm in a powerful electric field to see what will happen :P

[@amedla-kp3qs]

hyparh why did u add the :p

[@aarongreenfield9038]

@@amedla-kp3qs It's a :) emoji

[@amedla-kp3qs]

I thought it’s like for spiting

[@aarongreenfield9038]

@@amedla-kp3qs. Nah, it's just a little silly face with its tongue sticking out. Meaning anticipation.

[@amedla-kp3qs]

Aaron Greenfield ok now I get it

[@mrpumperknuckles1631]

What would this be used for???

[@HumbolSkitso]

If you had a heavy copper rod or a bat made of copper, could u hit the magnet if u swing hard enough? Or will it slow it down and protect the magnet from being struck.

[@franckpool9420]

Very very good video ! Could you tell us more about this large cylindrical magnet made up of discs ? Is there a pole (north or south) between each disk ? Where are the poles ? What is the magnetic field strength in tesla at 20 cm from the magnet, at 10 cm and at 1 cm ? Thanks in advance for the answer.

[@keeg025]

seller: what kind of magnets do you want? him: yes

[@divisionbyzer0474]

What kinda force would be required to remove one of those magnets. 😅

[@ag135i]

Wow very informative and entertaining video, how much did this magnets cost you?

[@MHDTechnologyLaboratory]

Around ~50 k EUR.

[@ag135i]

@@MHDTechnologyLaboratory thanks for the feedback.

[@KRXSS_]

I have a question So if I'm holding a flat magnet that weight 5kg and I place another round magnet that weighs 5kg and it floats perfectly above the first magnet that I'm holding will I feel the pressure of 5kg or 10kg because I don't know anymore

[@MHDTechnologyLaboratory]

You will feel 10 kg

[@KRXSS_]

@@MHDTechnologyLaboratory thank you my friend told me I would feel 5kg but I was confused but didn't say I was because I would feel dumb for being confused

[@bubblezovlove7213]

That's a monster... I'd love to see some indicator membrane near that, or that preparation you can make betwixt two panes of glass with ferrofluid and WD40 that shows the field lines. That'd be waaaaaay cool...

[@SithMami]

What are you going to do with that big magnet?

[@neonateartist7927]

How much of its weight a magnetised iron can lift ?

[@LightVortexMatrixStudy]

How much to buy? Got a link to the manufacturer?

[@itzyfan88]

Is it safe to buy this? Besides the magnetic properties, are the coating or any other part of the magnet toxic on a chemical basis?

[@MHDTechnologyLaboratory]

I don't know of any dangers besides magnetic properties. Should be safe if you don't plan to eat them.

[@skylane1829]

I’d hate to see someone with a pacemaker come near it. Still very cool .....t Thanks for sharing your video.

[@abhisekrout8522]

Why did that cooper sheet sped up downwards after passing through the middle of the magnet??

[@MHDTechnologyLaboratory]

More precisely copper sheet sped up after it was fully covering magnet. Reasoning is that sheet is slowed down by the rate of change of magnetic field rather than absolute value of magnetic field flux passing trough the surface. This would have been more obvious if magnet was raised so copper sheet had passed the other end too. In that case we would see it slowing down again until it was fully off the cylinder.

[@abhisekrout8522]

@@MHDTechnologyLaboratory Yeah, Right. Thank You. I never thought that when the copper sheet had fully covered the magnet and then as long as it falls through the magnet fully covering it, the net change in flux through the sheet was zero and the copper would only slow down as it would fall off the magnet as it would no longer fully cover the magnet.

[@lyonrodriguesdeoliveira3563]

congratulations for the video. this magnet is divided into parts or is whole. how did i get

[@MHDTechnologyLaboratory]

Nobody can't manufacture so large magnets. So we have to build such permanent magnet assemblies ourselves from smaller available magnets.

[@CUBETechie]

3:10 how much current is generated?

[@Scarrrz]

What website did you use to get each piece of this monster magnet? They look like 6X2 sized each to make that monstrosity! Thanks!

[@attoblaze3395]

i think theyre a lot bigger than 6x2 i would even go as far as to guess 18X4 all i know is that theyre massive!

[@zzzog2163]

What would happen if you put 1 iron sheet inbetween 2 copper sheets and then threw it at the magnet? Or maybe even a sandwich of copper, iron, and bisthmuth sheets?

[@MHDTechnologyLaboratory]

Iron would still dictate the behavior of such composite. It would get stuck to the magnet, just not as violently. Diamagnetism of bismuth is even weaker effect. Wouldn't change anything other than the mass of the proposed object.

[@zzzog2163]

@@MHDTechnologyLaboratory Interesting! Thanks!

[@MuradBeybalaev]

Playing with fire there. I can tell the magnets in your stack aren't all that powerful, but it still presents a major hazard of injury or even death if mishandled, let alone permanent damage to electronics. And it's very insidious in how quickly the attraction grows relative to distance.

[@balazssimon1647]

Man, how do you move thet thing? It's just part of the house now, or you have some specialized "wooden forklift" to move it?

[@CUBETechie]

What if you place the the magnets with n-n and S-S ? What would be the distance between them? How thick is one of those magnet?

[@billysgeo]

I believe it's a fortunate coincidence that those super big neodymium magnets came readily available during the decline of magnetic credit cards and CRT TVs!!! LOL

[@TWGStorms]

What is the magnetic flux? (Gauss/Tesla)

[@davidabraham376]

Can you make "pressing two repelling neodymium magnets" video?? And then measure the force that used to pressing that magnet until they touch each other. I think you will get more view for your youtube channel.

[@MHDTechnologyLaboratory]

Your wish has come true. We made such a video where we pressed two 95x50x50 mm magnets together. Needed ~500 kg of force :) . Enjoy kzbin.info/www/bejne/nGmkppqYe7yaY9U

[@marcinligas3538]

With this magnet you can't catch UFO from space or satellite 👍😂😉 I think this magnet it's so strong that can't destroy your phone or something electronic with this power !

[@adrianbeli3076]

R/woosh

[@randomweirdyoutubechannel8955]

Probably won't be that long until magnets this size will be used on subwoofers

[@marcusbighouse]

So strong even my cellphone screen got scrambled

[@christopherleubner6633]

I remeber finding a similar strength but a bit smaller one like this in a portable lab type MR analyzer at a junk yard. It was two thick magnets in a frame. 😲

[@adijevans]

Wow so many questions about this beast how did you construct it? Individual sections magnetized and bolted together?

[@AlexTriana]

could be this kind of magnets be used for simulating an artificial magnetosphere?

[@Quickened1]

It is in itself a magnetosphere. But to simulate the earth's magnetosphere, a much more powerful electromagnet would be more suitable... After all, the earth is one giant electromagnet...

[@xikmatillosultonov4665]

Where to find this magnet

[@SwapPartLLC]

Imagine being the delivery person and being unable to unstick this from the inside of the delivery van.

[@MHDTechnologyLaboratory]

It happened to us once when other company didn't know how to pack such magnets properly. Got the shipment stuck to a bed of semi truck and forklift alone was not strong enough to lift it off :) But as long as you can stick lever underneath it, it is possible to slowly detach it.

[@SwapPartLLC]

@@MHDTechnologyLaboratory Man, I wish I could have seen that.

[@pahnfulmemesyeet248]

if it was N52 which is damn expensive, would destory everything everywhere.

[@Dasycottus]

I was wondering if this was less strongly magnetized than some of the smaller magnets--it seemed like it. Still potentially very dangerous though!

[@dare2dash806]

Neighbors: wHY IS mY COMpASS noT WoRkinG!?!

[@devendrakoirala1176]

How much tesla magnet is this?

[@stardusts42]

Will the induced current go on the ring on his finger?

[@MHDTechnologyLaboratory]

Short answer - yes. You can approximate by Lenz's law. If I move the finger in 0.1 s and magnetic field changes 0.5 T it would cause induced voltage of 1.5 mV for area of 3 cm^2. Resistivity of silver ring is about 0.4 mOhm which gives around 4 amperes of current. (though only for duration that change of magnetic field happens )

[@joshuanorris9785]

Is one side of this magnet N pole while the other S pole?

[@MHDTechnologyLaboratory]

Yes.

[@James-ri3fd]

Can you make a diamagnetic generator using this?

[@mmhuman]

Is it a black hole ??

[@shimronnetia]

can you use one of those to manufacture a speaker

[@BreakingG_News]

Where do u order something of this scale?

[@werechanraymond8936]

Hello. Can this wonderful magnet loss it's magnetism? If yes, how?

[@MHDTechnologyLaboratory]

Yes. Easiest way to damage such magnets is with impact (mechanically they are like ceramic so they chip and break). Also when heated above 80 C they start to lose magnetism.

[@jagajaga4150]

How much cost for magnet

[@TheFamilyFarm1]

Iv always wonders is thare a force between to very large magnets if you pout ur hand in between them when u turn one around

[@A1Skeptic]

Yes, magnetic force goes right through your hand like it isn’t there. In fact magnetic fields go right through any non metal, like wood, glass, or plastic.

[@anttumurikka8728]

you must be happiest man on world

[@jagajaga4150]

How many size magnet

[@alekinhodeflores4288]

How much does cost this monster? 😂

[@7XHARDER]

When I looked online, each of those magnets was about $3000... Well 10 years ago when I actually searched for it

[@alekinhodeflores4288]

@@7XHARDER Thank you. I thought it's way more expensive.

[@MHDTechnologyLaboratory]

​@@alekinhodeflores4288 This costs around ~50 000 EUR.

[@andrewgolara6468]

@@MHDTechnologyLaboratory where I can find it if I would like to buy it?

[@MHDTechnologyLaboratory]

@@andrewgolara6468 You can't buy a magnet of such size from any magnet manufacturer. Anything bigger than ~5 cm in magnetization direction has to be a custom made assembly of magnets. We do it in- house for the various machines we build. Theoretically, if an individual wanted to spend (tens of ) thousands of Euros, we could supply them with a custom made magnet.

[@chrisguli2865]

I always pondered about building a bumper car whose bottom was all N facing down neo magnets, on a floor with all N facing up. Should be fun!

[@jaibabu4223]

Where can I buy this magnet? Pls give me the details of supplier

[@MHDTechnologyLaboratory]

You can't buy such large magnets. We make them ourselves.

[@jaibabu4223]

@@MHDTechnologyLaboratory how can I make n52 magnet? Can you help me

[@klam77]

HOW much it costs?

[@minhazhaque5340]

Where can I get it & buy it?

[@WilliamRedfield1528]

Very Cool.

[@ericmasaba9823]

Can you swing this magnet at a dense copper wall and measure the heat created as the copper brings the pendulum swing to a standstill. It may be dramatic. Can you also rotate the magnet near a dense copper wall and measure the temperature change too please. Thanks!

[@MHDTechnologyLaboratory]

The change in temperature will be negligible. It is because kinetic energy in absolute terms will be small. All the kinetic energy will go to heat. Despite the mechanism being different ,it is the same as dropping rock on copper plate. Almost all the kinetic energy goes in to heat, but we dont even register temperature change in dropped. The equation would be 1/2mv^2=m*C*dT, where m is mass, v velocity before impact, C heat capacity for copper, dT change in temperature. When you plug in reasonable numbers, you get fraction of degree :/

[@ericmasaba9823]

Thank you for the response. I am very interested in magnetocalorics but know there are different, better designed materials for giant magnetocaloric responses. Europium and Gaodlinium ( Gd5Si2Ge2 ) alloys look promising ( EuTi0.875Mn0.125O3 )

[@ronl9357]

Will this work to stick my report card to my fridge?

[@MHDTechnologyLaboratory]

You could can use a fridge to stick your report card to this magnet :). We had such idea, but choose not to do it because we might not be able to get it off easily. + inital impact very likely would damage it.

[@Fanta....]

not if you're a naughty son of a bitch

[@saada5369]

The fridge will break and fall on your head if you try

[@الصين-ب5ي]

Hello dear Thank you for the scientific explanation. I have two questions. I would like a satisfactory answer, and I apologize for the translation because I do not know English. 1- The best magnetic field insulator, look for it from a reliable source with a high quality of 50mm * 50mm magnets 2- The best company that manufactures high-efficiency magnets, I want the name of 3 companies, respectively, and thank you for my service

[@user-pb4jg2dh4w]

Dude plz make with this copper plate something like a gloves and try to punch this magnettttt, omgg you Willl be crazy 😜

[@maneeshanethsara-pn2zq]

Thanks bro

[@mintudoku9375]

If you use for wind generator.... i hope you got alot of electricity... and have you try with aluminuium plate

[@maxmustermann5353]

What are these magnets used for? (Apart from making cool videos)

[@MHDTechnologyLaboratory]

We build and study machines that stir and/or transport conducting fluids ( mostly liquid metals) with magnetic fields.

[@maxmustermann5353]

@@MHDTechnologyLaboratory Cool. Is it spun up and used to move things like NaK? Why aren't electromagnets used for that purpose? Good Video! Thanks for the awesome demonstrations.

[@MHDTechnologyLaboratory]

@@maxmustermann5353 They are used. For moving molten metals trough loop one can use both electromagnets and rotating permanent magnets. First includes conduction pumps ( when you inject current directly in the melt) and induction pumps where you use a set of coils to and induce a current in the melt. Each of the methods has advantages and disadvantages. The drawback of conduction is problems with electrical contact when thousands of kA are passed trough. Induction pumps are contactless, however, permanent magnet ones can in general achieve higher output for the same supplied power.

[@maxmustermann5353]

@@MHDTechnologyLaboratory Thanks, very interesting stuff :-)

[@teresashinkansen9402]

Wow, for what is this kind of assembly used for? MRI machines?

[@MHDTechnologyLaboratory]

No. In MRIs they use superconducting electromagnets.

[@teresashinkansen9402]

@@MHDTechnologyLaboratory Oh i thought some smaller machines of low magnetic fields could use permanent magnets to avoid the usage of cryogenics. Still im curious about that kind of application could have such massive assembly or its classified? Thanks for your answer!

[@teresashinkansen9402]

In reply to myself and to anyone curious. The magnet assembly was very likely used for aluminium melt stirring experiments in huge crucibles.

[@Dasycottus]

Fascinating but frightening. Everything is a projectile!

[@manishakharwa5049]

Epic level

[@jasonlatour3403]

Nice! What does that magnet cost?

[@bubblezovlove7213]

Lives! 😆

[@jesusischrist1527]

Imagine making a PMG out of two of these magnets hahaha

[@MisterRorschach90]

Could you create a form of artificial gravity by having one magnet pulling down on a reference frame while another magnet pulls from the opposite direction? Kind of how you increased the weight of the wrench by 25? Instead of you pulling on the wrench another magnet pulls on the wrench? Hell in a spacecraft you could have magnets surrounding an entire area and apply specific voltage to the magnets so you could keep a constant 9.8 ms2. So when the craft is moving it uses the acceleration in addition to the magnets to fake gravity. Idk maybe it’s impossible.

[@Quickened1]

Yeah.. not gonna happen with permanent magnets. Now electromagnets, maybe... but even then, since the human body is pretty much non magnetic, our bodies will experience very little effect. Ferrous items may experience a form of artificial gravity, but it would take a lot of computing power to maintain it...

[@JennySimon206]

@@Quickened1 what about if you use the magnets to rotate the craft or space station. Lets say if you wanted to hollow out an asteroid to be a stealthy space station and make artifical gravity could you put a magnetic set up in there to spin the interior making artifical gravity?

[@ThankYouESM]

There's a project I want to see built that involves 2 very large super magnets placed over each other kept in just a long enough tube whereas those can pull at each other furthest away... with quite a slit beneath the top magnet where... maybe a sheet of aluminum can always slide in between them. I want to see how much electric power it will generate for the magnet to both rise and fall... and what would be the least amount of energy it takes to block that magnetic field with a sheet.

[@สาระโคจรแสง-ซ9ค]

มาแล้วเทคโนโลยีพันๆปี 555 รุ่นโดราเอมอนสะด้วย

[@jamesmatheson5813]

I don't understand how you can take things off if it doesn't have a on off switch I have a 7lbs on off magnet that if i didnt turn off i would never be able to take things off of it

[@altinshala313]

how many T is this ?

[@MHDTechnologyLaboratory]

I think it was 0.6 T on poles. Though measurements directly next to the surface are inaccurate since the Gauss-meter probe has finite size measured in millimeters.

[@jogmanY]

Domā ka leikocīti nejūt magnētisko lauku?

[@N.g.Chanal]

sir one test copper sheet cooldown at -198C ..

[@shamaryasharahla344]

Can anyone please tell me where can I purchase those kind of magnets?

[@aarongreenfield9038]

One like that would cost tens of thousands of dollars. One about the size of your fist is about $200. There's a wide variety of them on Amazon. Up to around the size of a bar of soap, Down to the size of a grain of rice, and everything in between.

[@itsupportservicedk7474]

Does the copper get warm when u do that?

[@MHDTechnologyLaboratory]

In principle energy is dissipated in form of heat, but in practice with few repetitions it does not heat it up.

[@turbo3089]

Where do you get magnets at this size

[@MHDTechnologyLaboratory]

Online. You make a big one from smaller pieces.

[@oraymakina7778]

@@MHDTechnologyLaboratory How can we make big size from the smaller magnets? What is magnet dimension you use in this project?

[@bucketheadkfc]

20kg copper sheet? Looks more like 2kg

[@haidergondal7482]

Where did you get from

[@MHDTechnologyLaboratory]

We built it from smaller magnets.

[@oraymakina7778]

@@MHDTechnologyLaboratory How small? How many magnets are there in your assembly?

[@MHDTechnologyLaboratory]

@@oraymakina7778 Were about 260 pieces and size of them you can see in this video kzbin.info/www/bejne/nGmkppqYe7yaY9U

[@oraymakina7778]

@@MHDTechnologyLaboratory these magnets has square form, but your big magnets has circle form. How did you make assembly?

[@dcfromthev]

Hope that stool is made of aluminum! I'm surprised metal things in the room arent flying around.

[@MHDTechnologyLaboratory]

Magnetic field decays very rapidly further you move from the surface of the magnet. (B~ 1/r^2, where r is distance)

[@Bob_Adkins]

Actually, aluminum is slightly magnetic. I wish MHD would have tested it, that magnet may be strong enough to show it.

[@shanthisankaranarayanan3098]

0:32 Thats a 25 Kg Gym exercise equipment bro✌. Disclamier : Never wear any steel ornaments or belt while doing it⚡😯

[@MHDTechnologyLaboratory]

We actually do empty our pockets before starting the work with magnets. I believe I did accidentally kill a smartwatch with a smaller but quickly rotating magnet. ( couldn't turn on next day)

[@shanthisankaranarayanan3098]

@@MHDTechnologyLaboratory That's nyc bro. Thank you for replaying. Didn't expect this. Like from India🇮🇳

[@iindium49]

Imagine floating this magnet on its field. Maybe spin some aluminum under it or copper or something

[@Kaxlon]

How strange. The peaks in the fluid is the same size as when put up to a much smaller magnet. Why is that so? =)

[@MHDTechnologyLaboratory]

My guess is that peaks not only need strong magnetic field, but also field gradient.

[@physicsbystanprisajny6284]

G force equals what baraban force

[@MoltenMouseMetal]

That's something you'd want to stay away from if you've got a Prince Albert...