Rotating magnet levitating over superconductor

[FearMeexRawr]

So where can i purchase liquid nitrogen. I dont want an entire tank i just want a little. I heard it can be stored in a stainless steel thermos...?

[shawn8093]

Would putting copper close to the spinning magnet gradually slow it down? Please answer.

[Antardrews]

where can i buy a superconducting disk or liquid nitrogen???

Some1 answer please

[mordsith05]

if you could use the meissner effect in ambient temperature (room temp), then you could technically have roads where we could have cars which would 'float' using this effect. Yae no more harming environment. And we could power it much like the magnilev trains.

[tombeardsley]

Orrrrrrrrr If someone was to find a way to keep the superconductor below its critical temperature without using energy or just a small amount of energy at the start to cool it then you could put the magnets in the road and have the superocnductors inside the cars. It would make more sense. And we think we've found a way to do this. If it works then it could mean big things happening soon!!!!!!!

[iisduncan]

@tombeardsley if we could do this there would be no energy crisis and we would be able to store energy perfectly so we could harvest it with out wastage, such as from lightning

[kroflinkristian]

@mordsith05 Why roads? Make it underground. Makes it easier during the extreme parts of the seasons (summer and winter) + the lanes would have to be less frequently maintained.

[5859987]

try to put string from magnet to the super conductor,

if it's real anti gravity then it will fly !!!!!!

new idea , if i'm right please tell me

[jhekkonen]

This is not anti-gravity. Two ordinary bar magnets held north-to-north will also repel each other but you don't expect them to fly if you tie a string between them do you?

The phenomenon in the video is not really the same as two magnets repelling each other but the same reasoning regarding the "anti-gravity" applies - they are simply repelling each other. Look up "Meissner effect" on wikipedia if you are interested in the details.

[MasterTxJ]

Is there any limit to how much electrical energy that could be stored in a circulating loop of superconductor wire and is there a way of amplifying it indefinitely?

Just interested if anyone knows.

[jhekkonen]

The limit is set by either the critical current density or the critical magnetic field (since the loop itself will give rise to a field). These are material parameters specific for the superconductor.

[paintdataint]

I dont know but i do know that if you keep it cooled it could carry a current for millions of years.

[PajkeTheMan]

where did you buy high temperature superconducting ceramic?

[jhekkonen]

I made it.

[technologic21]

get that to move in all directions and we can ditch cars.

[rlarach]

what is the object in the bottom?

[jhekkonen]

First there is a styrofoam container with liquid nitrogen. In the liquid nitrogen there is an aluminium bottom plate and attached to this plate are pieces of high temperature superconducting ceramic.

[hydrogenman15]

Cool!! You should put a pulsing electromagnet by it and make it spin really fast!!!

[jhekkonen]

Yes, we actually have one but unfortunately one or two of the superconductors are chipped so the stability is not perfect and high speed rotation destabilizes the magnet.