Date: Fri Aug 7 11:18:13 2009

Author: Pati Sievert

Subject: Re: Variation on a demo I saw at Ann Arbor

Post:

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Cliff,
Please send it to me as well.
Thanks,
Pati

On Fri, Aug 7, 2009 at 8:26 AM, wrote:

> I think it was Mark that had set up in the back room of the lecture
> demonstration area at the University of Michigan this demonstration: Two air
> core solenoids with their axes vertical were connected together with wires.
> Two magnets were suspended on springs above them so that the magnets could
> oscillate up and down into the bores of the solenoids. When one magnet was
> set in motion the other began to oscillate in time.
>
> My modification is to place a large table galvanometer in the circuit to
> monitor the current in the solenoids. Poser: If you set the apparatus into
> oscillation and stop by hand one of the magnets, what happens to the
> current?
>
> I have a picture of my version should anyone want me to send it to them.
>
> Cliff
>
>


--
Pati Sievert
STEM Outreach Coordinator
Science, Technology, Engineering, & Math
Northern Illinois University
DeKalb, IL 60115
815-753-1201

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Cliff,
Please send it to me as well.
Thanks,
Pati

On Fri, Aug 7, 2009 at 8:26 AM, <= /span> wrote:

I think it was Ma= rk that had set up in the back room of the
lecture demonstration area at th= e University of Michigan this
demonstration: Two air core solenoids with th= eir axes vertical
were connected together with wires. Two magnets were susp= ended on
springs above them so that the magnets could oscillate up and down=
into the bores of the solenoids. When one magnet was set in motion
the oth= er began to oscillate in time.

My modification is to place a large table galvanometer in the
circuit to mo= nitor the current in the solenoids. Poser: If you set
the apparatus into os= cillation and stop by hand one of the
magnets, what happens to the current?=

I have a picture of my version should anyone want me to send it to
them.
Cliff




--
Pati Sievert
STEM Ou=
treach Coordinator
Science, Technology, Engineering, & Math
North=
ern Illinois University
DeKalb, IL =A060115
815-753-1201


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