Can someone please explain how this works?

[Dave _from_Kiev]

I find this stuff fascinating and would love to know how it works. I dont get how liquid nitrogen affects the action.

any physicists in here?

http://mostinterestingblog.blogspot.com/2007/03/amusing-physics.html


the third video to be specific, Although the others are cool too!

[tstlkevanilla]

:idontknow

[d0uche_n0zzle]

It's magic!

[BCH]

It's a demonstration of superconductivity (http://en.wikipedia.org/wiki/Superconductivity).

[YaHearIHearMe]

What you REALLY dont know... you must be dumb.
You can see there's something up his sleeve.

[Newmania]

That last one is fucking cool.

[Beeman99]

some of that shit is cool as hell, but I just wasted half an hour looking at it all, with no better understanding why it does it.

[tstlkevanilla]

some of that shit is cool as hell, but I just wasted half an hour looking at it all, with no better understanding why it does it.

x2

[THE FEZ MAN]

its majik,,,,, two dammage!!! two dammage!!!

[Your_Moms_Box]

The last one is really cool.. I'm assuming it has to do with the different patterns of the sound waves, blah blah blah.

Now I'm gonna go hunt down old Mr. Wizzard episodes

[d0uche_n0zzle]

Or it could be the WORK of...
SATAN.

[Wick]

It all has to do with cocks and vagina's, without birth this shit can't take place. Comon people!

[Dicktator]

WTF is a water sphere?

[ruckstande]

WTF is a water sphere?
You don't know? Man you must be dumb. I'm sure not going to tell you.:icon_conf

[generoso]

The 3rd video is demo of superconductivity. As you know all atoms move around the center. If you can supercool anything down to where the atoms stop moving. You get a state called super conductivity. zero resistance the perfect conductor. hence why the metal levitates over it. If we could at one time get a material to superconduct at normal temperatures. we could solve the would power problem. Magnetic cars on supercontive roads. would use no gas, But alais they got it to liquid nitrogen. nothing higher. Also computers could go 1000 times faster.

[ShooterMcGavin]

What a bunch of nerds we are.

[Truckers_hell]

Or it could be the WORK of...
SATAN.

Yes it is, and my master will be coming soon!!!!!!!!

bwahhhhhhhhhhhhhh

[ktfo22]

Cool stuff.

[Buster H]

I find this stuff fascinating and would love to know how it works. I dont get how liquid nitrogen affects the action.

any physicists in here?

http://mostinterestingblog.blogspot.com/2007/03/amusing-physics.html


the third video to be specific, Although the others are cool too!

BCH's link describes it in depth, simpler explanation is:

1. When a metal such as tin, is cooled with liqud nitrogen, it becomes a super conductor.
2. Superconductors expel magnetic fields due to what is called Meisner effect. See picture below.
3. When a magnet is placed above a superconductor, the superconductor resists the magnetic field and therefore will repel the magnet
4. Magnet floats

http://www.abdn.ac.uk/physics/case/99/images/diamag.gif

[grail]

The last video has to do with harmonics on the plate. As sound move through a substance it creates a pressure wave. This wave can be measured by the amplitude and frequency. Specifically for this demonstration the sound is transmitted through the plate and creates a resonance frequency. This is where the natural frequency of the metal is determined. The cool factor comes in with the sand sprinkled on plate shows graphically where the peaks and valleys of the frequency are in the plate. The patterns all set at multiples of the natural frequency of the plate.

[Jef Leppard]

i had hurricane balls once........its not fun

[Fr. Dougal]

3. When a magnet is placed above a superconductor, the superconductor resists the magnetic field and therefore will repel the magnet

But if it repels it, then why does it also attract it when the magnet is pulled up?

[generoso]

But if it repels it, then why does it also attract it when the magnet is pulled up?
Because it loves the other piece to much..