Date: 2008-07-22 01:24 pm (UTC)
From: [identity profile] robot-mel.livejournal.com
Those are also pretty great, I really liked the iphone one. The Penn and Teller one was pretty awesome too, except I know some people think like that!

Date: 2008-07-22 01:34 pm (UTC)
From: [identity profile] robinbloke.livejournal.com
Another comic to add to my daily feed; thanks :)

Date: 2008-07-22 01:49 pm (UTC)

Date: 2008-07-22 02:27 pm (UTC)
From: [identity profile] elfy.livejournal.com
but there are water powered batteries. at least soon. and right now there are at least devices which run on water, like calculators.
http://www.nigelsecostore.com/acatalog/water-powered-calculator.html
http://en.wikipedia.org/wiki/Water-activated_battery

Date: 2008-07-22 02:53 pm (UTC)
From: [identity profile] ciphergoth.livejournal.com
The battery is powered by chemical energy stored in the battery; the water just kicks off the chemical reaction. The calculator doesn't say, but I'd guess it's powered by a thermocouple with one end cooled by the evaporation of the water inside - calculators need very little energy to run. In both cases "water powered" is a bit misleading to say the least.

Date: 2008-07-22 03:22 pm (UTC)
From: [identity profile] elfy.livejournal.com
well, here in front of me i have a calculater which claims to run on water only without any battery... but i have to admit i'm not sure what a thermocouple is :)
http://www.ubergizmo.com/15/archives/2007/12/waterpowered_calculator.html
I guess they have a battery inside, yeah. But still :)

Date: 2008-07-22 06:53 pm (UTC)
zotz: (Default)
From: [personal profile] zotz
On the other hand, I do have an air-powered camera.

It has a zinc-air battery, and works very well.

Date: 2008-07-22 02:33 pm (UTC)
From: [identity profile] valkyriekaren.livejournal.com
http://cectic.com/027.html just made me giggle like an idiot. That one's going on the wall (right next to the Nemi and XKCD strips).

Date: 2008-07-22 06:22 pm (UTC)
From: [identity profile] seph-hazard.livejournal.com
I rather like this one, myself...

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