From: Mark Hurwitz (markh@ssl.berkeley.edu)
Date: Sun May 08 2005 - 17:39:27 PDT
From: "Mark Hurwitz" <markh@ssl.berkeley.edu> Subject: RE: pinhole fuel cell gadget? Date: Sun, 8 May 2005 17:39:27 -0700 Message-ID: <auto-000001370815@exploratorium.edu>
Reading the advertisement closely, it doesn't state unambiguously that the
device
can be refilled infinitely. Seems possible to me that it contains a cheap
dry chemical
battery, and the water just activates it. Maybe only once.
If refills do restart the cycle, and the clock/calculator contains no
exhaustible chemicals,
then other possibilities include:
-evaporative cooling creates enough of a temperature difference
to generate
electricity, as with a Peltier device?
-the mechanical act of removing and replacing the reservoirs or
whatever it
is you do somehow charges up a tiny battery?
-Mark
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