Date: Fri, 15 Aug 2003 10:56:26 -0500

Author: Andrew Yue

Subject: Re: jumping ring and induction light



As you have probably already discovered, by raising or lowering the
position of the iron core within the coil, you can fine tune the

To avoid overloading the main breaker, mount a power strip with a
resetable breaker to the table and use a heavy duty momentary switch
to activate the coil.

>Hi guys,
>Thanks for the help on the broomstick demo. We're having trouble
>with the coil we use for our
>jumping ring demo. Our ring just doesn't go very high. We've tried
>different metals and cooling
>it down with LN2, but we can never get it to go more than a few
>inches. So we've decided to
>make a new coil. Any suggestions?
>Flora Shepherd
>Bryn Mawr College


All the best,

Andrew Yue
- -
Physics Lecture Demonstration Office
Office Hours 8 AM to 4 PM , Mon thru Fri
Phone (512)471-5411

"The ultimate weakness of violence is that it is a descending spiral,
begetting the very thing it seeks to destroy. Instead of diminishing
evil, it multiplies it. " - Martin Luther King, Jr.

From Fri Aug 15 12:00:07 2003