27 Apr
2011
27 Apr
'11
7:45 a.m.
On Wednesday 27 April 2011 10:23:50 am Mark Tapley wrote:
At 18:59 -0500 4/26/11, ard wrote:
I did something similar way back when, only I used carbon rods scavenged from dead
"D" cells for the electrodes. Tried it first with batteries, and that was
awfully slow. So then I got this bright idea of using a selenium rectifier and a line
cord I had handy...
It was *amazing* how fast it went at that point!
I had to keep adding water, of course, and since "stuff" in the water stayed
put as the electrolysis proceeded, the water got darker and darker. This was right out
of the tap, and it put me off of drinking water for quite some time. :-)
--
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space, a critter that can
be killed but can't be tamed. --Robert A. Heinlein, "The Puppet Masters"
-
Information is more dangerous than cannon to a society ruled by lies. --James
M Dakin
If you are really crazy, use containers of salt
water with suitable
electrodes in them :-). Just don't knock them over and spill the liquid
into the machine under test.
...and do work in a ventilated area. The bubbles evolving off the
salt water will be, er, flammable, yes?
Did this with the kids, 12V supply = jump cables from my car,
foil "electrodes" in salt water, inverted test tube on a long holder,
and a candle to verify the type of gas (used the holder to move the
tube over the candle). Lucked out and collected the Hydrogen on the
first try (well, it wasn't really luck. The electrode with twice as
many bubbles had to be the H2.) They were suitably impressed. I was
impressed how fast the aluminum foil went away (into solution).