27 Apr
2011
27 Apr
'11
9:08 a.m.
On Wed, Apr 27, 2011 at 10:45:54AM -0400, Roy J. Tellason, Sr. wrote:
On Wednesday 27 April 2011 10:23:50 am Mark Tapley
wrote:
When I did that way back, I also used scavenged carbon rods from old batteries
and the water aquired a nice blackish/grayish tint. On closer inspection,
that seemed to be caused by carbon being eroded off the electrodes. They
sure weren't as smooth as originally after a while.
Kind regards,
Alex.
--
"Opportunity is missed by most people because it is dressed in overalls and
looks like work." -- Thomas A. Edison
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. :-) 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).