Date: Mon, 29 Sep 2003 09:41:30 -0400

Author: Wolfgang Rueckner

Subject: Re: Awesome EM induction demo!


>Have you tried soldering together a couple of 1 " slabs to make a 2" slab?

No, I have not. Wolfgang
From Mon Sep 29 07:35:02 2003
Date: Mon, 29 Sep 2003 10:18:34 -0400
From: AGraham
Subject: Re: Motion of falling bodies demo
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Hi Doug,

Doug Johnson wrote:

> I think that Andy Graham has a water drip(bubble?) setup that does the same
> thing. The drips are separated by a vibrator on the water tube or
> something like that... and as they fall the strobe can make the drips look
> like they are falling upward or stopped or go any speed inbetween. I think
> it produces a great shadow on the wall too...
> Andy, are you out there? Maybe you could shed some more light on this
> subject than I.

Right here. I'll be happy to supply information on the water dropper (pulsed
water stream under strobe light). It's fairly easy to build. The pump cost
about $100. But, I don't know anything about the demo with a mechanical ball
dropper, sorry.

andy graham

> ....Doug J.
> > I'm trying to recreate an old demo that was used in the 60's that
> >is similar to Meiners 7-1.15 (page 115). Basically its an apparatus that
> >drops balls at a set rate in synchronization with a strobe. The main
> >difficulty is the dispenser--does anyone know of any industrial or
> >consumer products that can dispense regular objects at a set rate? Or
> >will this have to be custom made...
> >
> >Gary Steinberg
From Mon Sep 29 07:36:58 2003
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