Alt-BEAM Archive
Message #07277
To: beam@sgiblab.sgi.com
From: robmc@acay.com.au
Date: Tue, 02 Nov 1999 19:37:35 +1100
Subject: [alt-beam] Re: aquabots - 'sealed' motor
Senior wrote:
> Well the problem with light bulbs are that there's a vacuum inside, so
> I don't think yell be getting much bouynacy out of them but I could be
> wrong!
>
Light globe's make great Cartesian divers. You just break the bottom off the
glass which lets air in it and put it in the water (the air being in the bulb).
Putting pressure on the air above the water in the container puts pressure on
the air in the bulb because the water can't be compressed easily. The bulb
becomes dives. Eye droppers do too.
Rob
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