[Vid]Amusing physics

[ignoto]

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I wish physics in school were something like this

 

[scrat55]

WOW the last one was absolutly amazing!

i didnt quiet get it but still... nice stuff.

 

[The_Gatekeeper_]

woah, I like the liquid nitro and magnet and the last one (although like scratt I didn't understand it :\)! Science is awesome

 

[iam2fast4u]

awsome and amazing.

 

[Pieman]

That's why I love physics. =p The only thing I don't get is how they got that magnet to hover with liquid nitrogen.

 

[ChojiroShintaro]

Nothing amazing to me. It's all simple.

 

[scrat55]

i can understand it in THEORY but exacly wut it is... no idea...

my theory: When the nitrogen touches the metal, it cools its temperature to the absolute zero point or -273 C. So the particules are frozen and dont move or do but just a lil and only the electrons do. The rest dont rly know, but could tell that it acts like a SOUTH to NORTH magnet in some way.

Real explanation:

Superconductivity is a phenomenon observed in several metals and ceramic materials. When these materials are cooled to temperatures ranging from near absolute zero (-459 degrees Fahrenheit, 0 degrees Kelvin, -273 degrees Celsius) to liquid nitrogen temperatures (-321 F, 77 K, -196 C), they have no electrical resistance. The temperature at which electrical resistance is zero is called the critical temperature (Tc) and varies with the individual material.

Because these materials have no electrical resistance, meaning electrons can travel through them freely, they can carry large amounts of electrical current for long periods of time without losing energy as heat. Superconducting loops of wire have been shown to carry electrical currents for several years with no measurable loss.

I was almost right

More scientifical explantion:

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[exclamatio]

loved the last one, beautiful to see it work

Nothing amazing to me. It's all simple.

just because you understand something doesnt mean it should lose its beauty

read "unweaving the rainbow" by richard dawkins

 

[linklink88]

There were many interesting vids on that site Makes me think of things I wanna do in school instead of playing with cheap things

 

[xuvurex]

loved the last one, beautiful to see it work

wasnt quite sure what was going on in the last one... but i liked the first one =D

 

[gReGiTh]

Floating magnet one is awesome.

 

[Mario_Party]

Physics in the world is amazing and new things are discovered like those things in the videos shown here that can help in the world. Like the liquid nitrogen and the magnets, that system is used in maglev trains, otherwise without creating a superconductor it would be almost impossible to provide the money to keep a train hovering above the tracks, the liquid nitrogen makes it cheap.

 

[Takeshy]

That was pretty cool actually. I liked some of those experiments and I have one of those magnetic levitation toys (the one where the video was removed).

I guess the speaker one at the end was a demonstration of the salt (or sugar or whatever it was) following the vibrations of the standing waves produced at certain frequencies across the board that it's on. Nice

 

[Omer]

I loved the floating disk and the balls one that was cool :d

cooler if something blew up