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Tom McCarthy
Saint Edward's School
1895 St. Edward's Drive
Vero Beach, FL 32963
561-231-4136
Physics and Astronomy
The cold ring flys further, faster, showing a greater current =>And cooling the ring in LN2 is an exciting way to show theOhm's Rule of Thumb that the lowered resistance results >in a greater
decreased resistance at lower T for most metals, as well as >illustrating
current being created by the changing magnetic flux. >(Faraday's Law
of Induction).
How do you monitor the difference between room temperature and LN
temperature currents?
thru the coil, making the Lenz's Law explanation more >beleivable.
The demos of this that I have seen only send a single pulse of >current
Since the ring goes flying high at the onset of the switch, wouldn't this
qualify as the effects of a single pulse?