Can you use the kelvin water drop generator for a light bulb

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Offline thedoc

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Julius asked the Naked Scientists:
   
Can you use the kelvin water drop generator for a light bulb? Or is it just something to look at?

What do you think?
« Last Edit: 22/05/2015 03:50:01 by _system »

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Offline Colin2B

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Julius asked the Naked Scientists:
   
Can you use the kelvin water drop generator for a light bulb? Or is it just something to look at?

What do you think?
I don't think enough current for a standard light bulb, but electrofluorescent materials might work.
and the misguided shall lead the gullible,
the feebleminded have inherited the earth.

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Offline evan_au

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Some examples of the Kelvin water dropper seem to build up enough charge to flash a small neon globe for less than a millisecond every 5 seconds.
That might be enough light for a disco for snails...

https://www.youtube.com/watch?v=Cr1w2nTfWYY

The energy of 1 liter of water (1kg) falling for half a meter is about 5 Joules.
If it flows out over a period of 5 minutes, that is about 16mW, or enough to power a small LED.