An Introduction to Superconductivity - segment 2of6
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@moatddtutorials
It has no effect since the measurement is 4-wire and voltage meter has high input resistance ...
xm07 8 months ago
It might also be noteworthy to mention that the apparatus holding the wires that is being submersed into the liquid helium is also being chilled, and perhaps its own internal resistance is lowering as well.
moatddtutorials 1 year ago
Yes,things can be superconducting at atmospheric pressure provided that you keep them cold enough. For example the lead bowl is superconducting in the liquid helium at 4.2 degrees Kelvin. At this temperature the liquid is at atmospheric pressure, and I had no difficulty lowering the littl magnet into the Dewar. It was open to the atmosphere at the top.
ale86itn 3 years ago
what if no pressure was applied? Can things superconduct at our atmospheric pressure?
ApexY2K7 3 years ago