Re: Student demonstration in Magnetism

[Bernard Cleyet <anngeorg@PACBELL.NET>]

The current balance was used to define the ampere in terms of F. l, etc.

PSSC lab was the first place I saw one (illustration).  Is common in
Brit. labs (U. of Nairobi uses (d) them).

If accuracy not required, is one of the more easily "home made"
apparatuses

bc


Tina Fanetti wrote:

> One of my students would like to do a demonstration in physics class.=
>   He wants to show how you can magnetically levitate a wire.   I have=
>  no idea how to do this.  I can solve the formulas and get numbers.  =
> He has done this and has come up with needing a current of 99 A.  I d=
> on't think so.
>
> Any thoughts?  Is it doable?
>
> Tina
>
> Tina Fanetti
> Physics Instructor
> Western Iowa Technical Community College
> 4647 Stone Ave
> Sioux City IA 51102
> 712-274-8733 ext 1429