Date: Fri, 22 Nov 2002 09:37:38 -0500 (EST)
Author: Michael McFarland
Subject: Re: Spherical Magnets
It is a cool demo! For one thing, it's relatively hard to break something
made in the form of a cylinder.
The length is up to us - weight, bulkiness and cost limit it's length.
But wouldn't want it to be too short, either - the magnet gets room to
It sounds very cool!
* * * * * * * *
Resources for Instructional Labs and Lectures
Physics, University of Notre Dame
225 Nieuwland Science Hall
Notre Dame, IN 46556-0338
(574) 631-5952 (FAX)
(574) 254-3036 (Pager: at the beeps, enter the number that I should call.
Or, in NSH, enter the number of the room in which you need assistance.)
On Thu, 21 Nov 2002, Zigmund J. Peacock wrote:
> Tappers, I just finished making what I think is a cool idea for the
> 3/4" spherical magnets.
> I took a couple of feet of 1.5" ID acrylic tube and machined caps
> for the ends. Then glued a 1/4" x 1.5 circle of Sorbathane to the caps.
> Inside the tube I put a length of 1" x 1" x 1/8" Aluminum angle and
> a Spherical magnet.
> "Ta Da" I have a lens law tube that can be passed around, that the
> students can see up close and personal.
> More importantly the little beggers can't swipe the magnet, lose
> the magnet, or worse get it covered with debris from the floor.
> I post a photo Vacek's site. Zig
> Zigmund J. Peacock
> University of Utah/Physics
> 115 SOUTH 1400 EAST #201 Tel 801 581 6602
> SALT LAKE CITY UT 84112-0830 Fax 801 581 4801
> "We sleep safely in our beds because rough men stand ready in
> the night to do violence to those who would do us harm"
> -- George Orwell
> "All that is necessary for the triumph of evil is that good
> men do nothing!"
> -- Edmund Burke