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Re: Lenz's Law?



Ahh, the joys of being a member of PIRA!!!

From the ten years work known as the "Physics Demonstration Bibliography":
The PIRA (Physics Instructional Resource Association) identification for
the demo in question is 5K20.30 jumping ring.

PIRA? Where can we find out more about this. It sounds interesting.

Derek.

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Derek Chirnside, Physics Department, Shirley Boys High School.
PO Box 27 025, Christchurch 8001, New Zealand.
chirnsided@mars.shirley.school.nz
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