Date: Sat, 16 Apr 2005 19:32:59 -0400

Author: sampere

Subject: Re: candle flame deformed by magnets


I have never heard of it. Most things are only very weakly diamagnetic
so those effects tend to get washed out - dominated by the stronger
effects of para and ferromagnetism. In addition, I would thing that
turbulence would further help to wash this out. If it worked, this would
be very cool.

The only e & m flame demo I do is to put the candle inbetween big
capacitor plates and charge with Whimshurst. The flame deflects and the
plates don't hold a charge.


Jerry DiMarco wrote:

> Tappers,
> An instructor wants to demo an experiment done by Faraday showing
> that permanent magnets cause candle flames to deform into equitorial
> disks. According to him, the explanation has to do with the net
> paramagnetism of the atmospheric gases and the net diamagnetism of the
> combustion gases (most things that burn are diamagnetic). I couldn't
> find anything like this in the DCS, and a quick try with a candle and
> NIBs produced no results. Has anyone heard of this experiment?
> Jerry
> <><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
> Jerry DiMarco
> Manager of Lecture Demonstrations and Instructional Labs
> Montana State Univ., Physics Dept.
> Bozeman, MT
> Our Motto: "There's a demo in there somewhere."
From Sun Apr 17 14:17:41 2005