Reducing temperature reduces resistivity, so the magnet is inducing stronger Eddy currents. The now opposing magnetic field is stronger, so the magnetic forces are stronger.
Yes, lower temperatures reduce the electrical resistance, since the atoms in the crystal lattice of the metal, e.g. copper vibrate less, this allowing the electrons to flow more easily. On a molecular level, temperature is defined by the kinetic energy of the atoms and molecules, at high temperatures they vibrate fast, getting in the way of electrons, creating what we know as electrical resistance.
Also, the Eddy currents work, because the change of a magnetic field creates an electric field, and vice versa, so the magnet passing by induces an electric field which in turn as its strength changes creates a magnetic field opposite to the magnet's, slowing the magnet down. Since the strength of the counteracting magnet field is proportional to the speed of the magnet, an equilibrium ist between gravity and the magnet force slowing the magnet down occurs. So, less electrical resistance means there is a stronger opposing magnetic field at lower speeds, that's why the magnet took longer to get to the bottom of the tube. On a side note, light also is nothing else than a magnetic and an electric field constantly building up and on collapsing inducing the other, this the name electromagnetic wave
Calli's new hairstyle looks *fabulous.*[edit]Guys. Please don't make her regret responding.[/edit] Also, looking forward to the presumed ring-making video.
@@calbits3383 Looking extra glamorous while the rest of the world is in sweatpants and cutting their own hair with garden shears. The hero we need, but don't deserve.
Really enjoy listening to these experiments. As a blind person I lov the amount of verbal description that you give during the process. Also I dig the type of background music in the videos. I'm curious to see if anything would happen if those magnets were microwaved. Would they have different reactions depending on having two stuck together or placed six inches apart?
When you drop the magnet through the tube, does the tube get heavier? Like if you weigh the magnet and tube separately, does it weigh the same when the magnet is falling through the tube?
Weight = mass * gravity Mass isn't changing because nothing is being removed or added. If you had a sufficiently sensitive scale you'd see a slight reduction in weight, but you'd be wrong. You would have failed to account for the slightly reduced volume with the lower temp which means the objects displace less air, which has a non zero buoyant effect. Sort of like when they were floating an aluminum foil boat in SF6. To amplify the effect take a helium filled balloon and immerse it in ln2. It will deflate to the point where it no longer displaced enough air to float until it warms up, expands and displaces more air. Weight = mass * gravity in a vacuum.
There's an endearing quality about Calli that I can't out my finger on. Maybe it's that she laughs at herself when she does something that turns out to be less than ideal but she keeps going regardless. Whatever it is, it's endearing.
From what I've heard, you should notice that when levitating the magnets, the warm one warbles a little while the supercooled magnet will stay perfectly still.
now you just need a magnetic track and a super conductor to make it hover along it, even upside down. (best example is to make a mobius strip lined with magnets)
They do know that the effect of super-cooling magnets has been known for years and is taught at Middle School where I live in the UK? Super-cooled magnets have been used in the Large Hadron Collider among many others.
8:13 That happens becaus e of the better electrical conductivity at low temperatures. So the electrons can move better and form a stronger Magnetic field. The reason why this effect is stronger when you increase the speed of the magnet is, that there are stronger changes in the magnetic field. That leads to a stronger induced magnetic field of the copper.
I wonder, if you get a powerful-enough magnet, can its eddy currents do anything to a bullet? I mean, lead may not be known for its conductivity, but it should still be affected if you make the magnetic field powerful enough. So I guess the real question is, how powerful and deep does a magnetic field have to be to dissipate enough energy from a bullet that it does no damage?
Calli: I wanna try the aluminum tube in liquid nitrogen Also calli: drops the entire thing in the container Nate and editor:did you drop the entire thin in the dewar Calli: I had better ideas
• 3:33 - Contactless magnetic/eddy-current brakes are used in various applications like roller-coasters, trains, elevators, and anywhere else where a large mass or high-speed (i.e., high force) needs to be stopped, as well as in places with high risk of fire, because frictional braking would create sparks and wear down the brakes rapidly. • 5:14 - Sometimes. I tried getting a dog, but that just made it worse. 🤦 • 8:20 - It's kind of like a Goa'uld energy-shield; the repulsive force is directly proportional to the incoming energy. • 11:27 - You're not making the magnet stronger; the cold is just making it harder for the atoms to align to the magnetic field.
I think their “50%” stronger comment neglects that most forces like that have an r^2 kind of reduction with distance. So 50% more range implies a much greater increase in strength or power.
@@namansingla2975 No, Drew Stevenson is right. By saying the magnet is x time stronger you're referring to the magnitude of the magnetic field vector at a given point. However, in the test we're not measuring the change in the field strength, we're measuring the point at which the force applied by the magnetic field times the coefficient of friction between the magnet and paper is equal to the force of gravity. As such, it is only fair to say the strength has increased by 50% if the filed decreases linearly - which it does not.
You got the aluminum to enter (or get really close to) the superconducting regime, so the eddy currents were stronger and therefore the resultant opposing magnetic field was stronger (same with the copper ingot). This is why supercooling is used/needed for magnetic levitation. Thanks for an awesome episode!
Hello Pressman here, explanation for why the magnet slid on one side of the paper but not the other is. When the paper is made at the paper mill the paper is strained through a wire mesh and is pressed by felt on the other side. so one side of the paper has a slight texture of the wire mesh while the other side is smoother from the felt. You can observe this on most every kind of paper with a magnifying glass. It is also a factor of how much silicone/anti-static the pressman applied during the run as it does not always flash off before packaging.
It should still work, but might cause problems. If cold temperatures lower electrical resistance, then super freezing an appliance cable may result in more energy entering the appliance and damaging it. I honestly dont know, though.
An experiment we did at my mothers house for the kids: Put the neodymium magnet in a zip-top bag and run play sand across it. The magnet pulls out the magnetite (black grains) in the sand. You need a pretty strong magnet for this; we tried a few, and the neodymium worked best. The kids thought it was cool for about ten seconds. The adults (both of us studied geology) spent about two hours collecting magnetite....
Would be REALLY cool to actually see the difference in strength with iron shavings and ferrofluid. And maby go down to liquid oxygen temperature see if gets better? Love you guys
Hi, Take the magnet and copper experiment to the next level by making a copper bumper and a magnet bumper for two cars and see if could prevent the two cars from colliding with each other.
I think the difference between the time for the magnet falling through a cold tube and a room temperature tube is to do with the fact that electrical resistance increases as temperature increases, this means that the eddy currents generated to be bigger (as have a bigger current and a smaller voltage as V=I*R.) this means that the force generated is bigger (since F=B*I*L). This is also the same principle for the magnet swinging towards the copper.
I have watched atleast 100 of your vids and I just realized that I'm learning, just my watching your videos AND enjoying them, we are learning That's why parents want kids watching ya'll lol
Click here to get your first KiwiCo box free!: www.kiwico.com/TKOR
First?
Second
@@wintermelon8092 nope
No one knows
Fourth
Reducing temperature reduces resistivity, so the magnet is inducing stronger Eddy currents. The now opposing magnetic field is stronger, so the magnetic forces are stronger.
Yes, lower temperatures reduce the electrical resistance, since the atoms in the crystal lattice of the metal, e.g. copper vibrate less, this allowing the electrons to flow more easily. On a molecular level, temperature is defined by the kinetic energy of the atoms and molecules, at high temperatures they vibrate fast, getting in the way of electrons, creating what we know as electrical resistance.
Also, the Eddy currents work, because the change of a magnetic field creates an electric field, and vice versa, so the magnet passing by induces an electric field which in turn as its strength changes creates a magnetic field opposite to the magnet's, slowing the magnet down.
Since the strength of the counteracting magnet field is proportional to the speed of the magnet, an equilibrium ist between gravity and the magnet force slowing the magnet down occurs.
So, less electrical resistance means there is a stronger opposing magnetic field at lower speeds, that's why the magnet took longer to get to the bottom of the tube.
On a side note, light also is nothing else than a magnetic and an electric field constantly building up and on collapsing inducing the other, this the name electromagnetic wave
@@joshuakrieger4398 thank you very much for the great explanation
When I read this I immediately thought of the Homer Simpson nerd meme
Have you seen quantum locking with a super-cooled type 2 super conductor and magnets? It's like magic it's great
Calli's new hairstyle looks *fabulous.*[edit]Guys. Please don't make her regret responding.[/edit]
Also, looking forward to the presumed ring-making video.
Yah I agree with ClokworkGremlin
@@calbits3383 Looking extra glamorous while the rest of the world is in sweatpants and cutting their own hair with garden shears. The hero we need, but don't deserve.
@@calbits3383 🤮
@@shawnchickering4907 who hurt you?
So you're telling me that magnets are stronger inside the fridge? I've been doing it wrong all these years!
hahaha
Instructions unclear: fridge is stuck on the roof
Grian refrence?
its a meme
@@vrfvercetti5415 but its not funny.... So.. Its not a meme?
definitely funny
Instructions unclear, my fridge is running
"Do you just find random youtubers in your house or studio?"
Patrick: "Hey..." LMAO😂😂😂
I mean... sometimes? XD
yhea all the time like yesterday i saw markiplier and today i saw mr.beast
Dude they’re literally in someone else’s house.
@@bye9014 no its there studio to film in
@@abee5325 NO SERIOUSLY. THE STUDIO IS IN GRANT'S HOUSE
i would LOVE to see you guys repeat this with some copper wire with a volt meter attached to see the difference in electricity produced
Sounds fun...
That will work but on small scale youd be lucky to get a couple of millivolts at best 😂
I would like to see that
"We've got a lot of Liquid Nitrogen"
Yeah, we see it like every video😂
I mean they have an full automatic generator
They set up an AFK farm
Really enjoy listening to these experiments. As a blind person I lov the amount of verbal description that you give during the process. Also I dig the type of background music in the videos.
I'm curious to see if anything would happen if those magnets were microwaved. Would they have different reactions depending on having two stuck together or placed six inches apart?
Me: watching TKOR while supposed to be doing science
Mom: What are you
Me: I’m doing SCIENCE
Nice
Nice
Nice
Nice
Noice
Calli: 8
Nate: 7 second
Stopwatch: No! 5.40!
whats the point lol not that funny
@toby .XTXMXMXFXCX. funny times
( ͡ಥ ͜ʖ ͡ಥ) carbonate tooooothhhpaste
okay this is actually a cool idea! you earned a like on this comment.
(๑╹ω╹๑ )
Oh gosh
@@KL96012 ( ͡◉ ͜ʖ ͡◉)
Joe barnard wants to:
know your location
Just wait until they discover superconductors...
They're going to be so excited.
When you drop the magnet through the tube, does the tube get heavier? Like if you weigh the magnet and tube separately, does it weigh the same when the magnet is falling through the tube?
surely
Weight = mass * gravity
Mass isn't changing because nothing is being removed or added.
If you had a sufficiently sensitive scale you'd see a slight reduction in weight, but you'd be wrong.
You would have failed to account for the slightly reduced volume with the lower temp which means the objects displace less air, which has a non zero buoyant effect.
Sort of like when they were floating an aluminum foil boat in SF6.
To amplify the effect take a helium filled balloon and immerse it in ln2.
It will deflate to the point where it no longer displaced enough air to float until it warms up, expands and displaces more air.
Weight = mass * gravity in a vacuum.
@@Zomby_Woof I think he means more like the magnet is imparting its weight onto the tube to slow itself down and that force has to go somewhere
2:36 the piano is perfectly timed
Calli, I love the way you do your hair now! So pretty! Who else agrees?
I have been binge watching TKOR all of the virus
It's ok to be addicted
There's an endearing quality about Calli that I can't out my finger on. Maybe it's that she laughs at herself when she does something that turns out to be less than ideal but she keeps going regardless. Whatever it is, it's endearing.
Nate: This video is sponsored by...
Me: Raid...
Nate: No Kiwi Co
Also Me: ➡️➡️➡️➡️
Brendan Kiyohara ⏭⏭⏭⏭
From what I've heard, you should notice that when levitating the magnets, the warm one warbles a little while the supercooled magnet will stay perfectly still.
Therapist: Freezing magnets don’t exist.
Freezing magnets can’t hurt you.
*Freezing magnets:*
Oh man, I so appreciate you mentioned that ICP song in the beginning! :D
Whoop whoop
I caught that "Miracles" by ICP reference 🤭
Whoop whoop
Whoop whoop
now you just need a magnetic track and a super conductor to make it hover along it, even upside down. (best example is to make a mobius strip lined with magnets)
11:36 Little too much quarantine there hmmmmm 😂
?
I think I get it
You guys should do another freeze drying video and freeze dry a hot dog
I have been watching since Grants videos RIP you were the best! 😔 😢 😭
Calli's new haircut really suits her! Love it
"Thanks to our sponsor"
Me:rai
"Kiwi co"
Me:😐
Lol nord vpn
Yup
Raycon
Is it just me or does calli look absolutely stunning like so breathtaking
"such a cool result to see" I guess the pun isn't intended? Or maybe not even noticed?
Thanks for the likes and replies.
No, the pun was induced.
😂
They do know that the effect of super-cooling magnets has been known for years and is taught at Middle School where I live in the UK? Super-cooled magnets have been used in the Large Hadron Collider among many others.
8:13
That happens becaus e of the better electrical conductivity at low temperatures. So the electrons can move better and form a stronger Magnetic field.
The reason why this effect is stronger when you increase the speed of the magnet is, that there are stronger changes in the magnetic field. That leads to a stronger induced magnetic field of the copper.
Magnets. How do they work? Nice Insane Clown Posse reference.
I wonder, if you get a powerful-enough magnet, can its eddy currents do anything to a bullet? I mean, lead may not be known for its conductivity, but it should still be affected if you make the magnetic field powerful enough. So I guess the real question is, how powerful and deep does a magnetic field have to be to dissipate enough energy from a bullet that it does no damage?
I expect The King of Random to have random TH-camrs in their studio/kitchen.
Love your vids
R.I.P The king of random. It will never be the same without you.
Calli: I wanna try the aluminum tube in liquid nitrogen
Also calli: drops the entire thing in the container
Nate and editor:did you drop the entire thin in the dewar
Calli: I had better ideas
Thanks for telling us what was in the video
Wow, Cali looks amazing with her new hair color/style.
What happens when you pour liquid nitrogen on a head of letuce and then set it on fire or put it in a microwave
Callis new hair color looks absolutely amazing
It's 12:30 in India and me tryna fix my sleep schedule was gonna sleep , yet I opened youtube and here I am.......
Bro it's 3:29 am here in the Philippines 🤣
Amutures
It’s 4:03 pm in Florida lol
Now it's 3:07 in India 😂😂
It's nice to see content on TH-cam that isn't a livestream.
• 3:33 - Contactless magnetic/eddy-current brakes are used in various applications like roller-coasters, trains, elevators, and anywhere else where a large mass or high-speed (i.e., high force) needs to be stopped, as well as in places with high risk of fire, because frictional braking would create sparks and wear down the brakes rapidly.
• 5:14 - Sometimes. I tried getting a dog, but that just made it worse. 🤦
• 8:20 - It's kind of like a Goa'uld energy-shield; the repulsive force is directly proportional to the incoming energy.
• 11:27 - You're not making the magnet stronger; the cold is just making it harder for the atoms to align to the magnetic field.
🙋♂️I vote for more Cali. Much more Cali.
0:21 I C (P) wut u did there
@Jonathan Meyer Listen to "Miracles" by Insane Clown Posse and you will get it
I hope you guys are collaborating with Patrick again. Love those videos!
I think their “50%” stronger comment neglects that most forces like that have an r^2 kind of reduction with distance. So 50% more range implies a much greater increase in strength or power.
🤯
I know you're saying that it would be 2.25 times stronger but the reality is that r^2 has no application in that particular test.
BIG BRAIN
@@namansingla2975 No, Drew Stevenson is right. By saying the magnet is x time stronger you're referring to the magnitude of the magnetic field vector at a given point. However, in the test we're not measuring the change in the field strength, we're measuring the point at which the force applied by the magnetic field times the coefficient of friction between the magnet and paper is equal to the force of gravity. As such, it is only fair to say the strength has increased by 50% if the filed decreases linearly - which it does not.
Calli looks great in this video!
Well, this the reason that the magnets in an MRI are cooled by liquid helium:
Stronger magnetic field.
you guys seem so calm even when theres a situation
"I might've got it to touch then, but I'm not positive" I see what you did there Nate, and I'm positive my comment will attract a negative response
Hi, I'm a negative response!
@@emmawilliams9904 called it 😂
Instructions unclear fridge is now an electro magnet
He replies I will put his face on a billboard
Papa jake games Ohm where should I look if he does?
You got the aluminum to enter (or get really close to) the superconducting regime, so the eddy currents were stronger and therefore the resultant opposing magnetic field was stronger (same with the copper ingot). This is why supercooling is used/needed for magnetic levitation. Thanks for an awesome episode!
freeze a superconductor in liquid nitrogen then get a neodymium magnet and try get it to float
You need a type 2 superconductor for that. The flux pinning effect of the type 2 superconductors causes it to float in place.
The cylinder touches the copper when it goes slowly. "The slow blade penetrates the shield."
You should make a floating coffee table or something using magnets!
Should do magnet stress test
👏
Bubbles Bubbles wow ur first
You guys were touching the boundaries of quantum locking.
When your coin fell over the ground just use magnet
superheroking 580 magnets don’t stick to coins.
Axolotl Is Cool you have magnetic coins?
@@andrew4537 In my country some coins are magnetic
Although, why use magnets when you can use your hands?
Erudite England pennies are magnetic
I’ve been wanting to see this! Thank you!
Put flex seal into liquid nitrogen to see if it turns runner again!!
Hello Pressman here, explanation for why the magnet slid on one side of the paper but not the other is. When the paper is made at the paper mill the paper is strained through a wire mesh and is pressed by felt on the other side. so one side of the paper has a slight texture of the wire mesh while the other side is smoother from the felt. You can observe this on most every kind of paper with a magnifying glass. It is also a factor of how much silicone/anti-static the pressman applied during the run as it does not always flash off before packaging.
try to freeze a cable to see if there will be still powered

Are you greek?
The Octopus Gamer no idea!
@@octopus123 yes
@@mixalisgalanos8759 και γω!
It should still work, but might cause problems. If cold temperatures lower electrical resistance, then super freezing an appliance cable may result in more energy entering the appliance and damaging it. I honestly dont know, though.
An experiment we did at my mothers house for the kids: Put the neodymium magnet in a zip-top bag and run play sand across it. The magnet pulls out the magnetite (black grains) in the sand. You need a pretty strong magnet for this; we tried a few, and the neodymium worked best. The kids thought it was cool for about ten seconds. The adults (both of us studied geology) spent about two hours collecting magnetite....
Wow. Quarantine got me early. first view
Cali: Cold dose stuff.
Me: Can you make the the next TKOR Shirt?😂
check the action lab's vid bout this its more complicated and detailed
but less fun
Calli is looking extra fabulous for quarantine while the rest of us can barely bother to put pants on... Respect👊🏻
You ever see a comment and just say:
“Hey, I wish I said that”
every time
This is becoming a trend now :(
I wish I said that
̔̏ he said I wish I SAID that
I never do, as all I say is that's my line 😂
Today on TKOR we investigate super conductors.
Is Kiwi co the new "Raid shadow legends".
Cali looks extra pretty today!
I'm early again wtf is corona doing to me 🧐😤
Getting you drunk
@@emmawilliams9904 no not exactly my point😅
Would be REALLY cool to actually see the difference in strength with iron shavings and ferrofluid. And maby go down to liquid oxygen temperature see if gets better? Love you guys
"such a cool result to see" I guess the pun isn't intended? Or maybe not even noticed?
Did you try freezing both magnets on the pole and where did you buy the magnets, the copper bar, and the liquid nitrogen?
Calli your hair looks amazing.
Nat the magnet tests was great to.
nate and callie can you please try to drop freezing magents on top of something you have lit on fire
now i want to see like, a musket firing a copper ball at a supercooled neodymium magnet block.
Try freezing both the tube and the magnet or both copper and magnet
Loving Cali’s hair!
Love the random U-tuber.They are everywhere!!!
Hi, Take the magnet and copper experiment to the next level by making a copper bumper and a magnet bumper for two cars and see if could prevent the two cars from colliding with each other.
nate is taking over i feel i want to see calli and calli talk
Magnets in Arctic must be nuts
Cali's new look rocks
Make a magnet gun using the magnets repelling each other
Unfortunately that’s impossible
You guys have really been helping me lately so i'm not too bored while doing school work
People: were you slow due to cold temperatures?
Atoms: well yes but actually no
I saw a video of aerogel and I think you should make some and do something to it
great example of social distancing
Grant:i like heat and fire what do you like?
King of random now:emm....diy why projects?.......
I think the difference between the time for the magnet falling through a cold tube and a room temperature tube is to do with the fact that electrical resistance increases as temperature increases, this means that the eddy currents generated to be bigger (as have a bigger current and a smaller voltage as V=I*R.) this means that the force generated is bigger (since F=B*I*L). This is also the same principle for the magnet swinging towards the copper.
This is actually what they use in MRI machines. A bunch of super-cooled electromagnets.
I have watched atleast 100 of your vids and I just realized that I'm learning, just my watching your videos AND enjoying them, we are learning
That's why parents want kids watching ya'll lol
"....magnets, how do they work?"
(Wondering if they know that's an ICP reference)