Superconductor with no current?

AI Thread Summary
The discussion revolves around a science fair project focused on superconductors, specifically testing the ability of a ceramic superconductor to pass current and illuminate a lamp. The project successfully demonstrates the Meissner effect but encounters issues when attempting to pass current through the ceramic, resulting in no light output. Participants suggest using an Ohm meter to measure resistance to confirm if the ceramic is truly in a superconducting state. If resistance is detected, it indicates that the ceramic may not be in the expected superconducting state. The conversation emphasizes the importance of verifying the conditions under which superconductivity occurs.
Racer77
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Hello everyone! My brother is having a science fair coming up. He is doing it over superconductors. We have the Meissner effect down just fine, but I have this idea to pass a current through the ceramic in its superconducting state. We want to show the difference in brightness of a little lamp compared to a regular wire. We are having trouble with this part. Whenever we touch both wires to the ceramic (in the superconducting state) nothing happens. The light does not glow. We can not figure out what is wrong. It should pass a current. I don't know if there is some coating around it that stops the electrons or not. Thanks for any Help!
 
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Ohm's Law meet's Occams Razor. Where you put the wires, do the same with an Ohm Meter and check the resistance under the conditions where you thing the ceramic is in a superconducting state. If the result on the meter is larger than zero, then the ceramic is, for whatever reason, not in the superconducting state you think it is.
 
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