Water Powered Clock
January 12th, 2006 12:13 PM | by Christen da Costa | 5 Comments
If you need a little more novelty in your life and already have the water powered calculator, then you need one of these. It’s a clock that runs on the liquid of your choice, and apparently does so by extracting electrons and converting them to electricity via a fuel cell. We’d suggest water over any other liquid, but it’s your penchant for weirdness that will determine that. Doubles as a flower vase and will run you equivalent to a few months water bill.
Available at ThinkGeek for $12.99
Via TreeHugger
This thing is not powered by water. It’s powered in the same way that old potato battery science project that you had as a kid is. You have an anode and a cathode and they use the water as the medium for electron transfer between them.
What really is going on is that you have a hunk of zinc touching one side of the water, and a hunk of carbon or copper or something else on the other side. The electrons are leeched from the zinc, through the water, to the other connection, and there’s your current flow.
It’s not really powered by water, it’s powered by a dissolving hunk of zinc. The water lasts so long because it’s just evaporating slowly, as would any other container of water you could put in a room. When the zinc runs out, so does your clock.
So its really just one big battery? and the water is the conductor? Sorry if im a bit ignorant of some blaringly obvious fact, i’m not too good at the old physics
Why don’t we use this technology (but on a very very much bigger scale) to produce electricity ?
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