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Re: Re: [TCML] sparks from water



jimlux wrote:
google "Kelvin water dropper"

A bit tricky to get them to work (insulation is the key) but lots of fun. You can build really big ones (using things like 2 gallon metal pails) or tiny ones.

Somewhere around I have a paper from the 19th century describing one using a sort of shower head.

Probably this:
http://www.coe.ufrj.br/~acmq/fuller1.jpg
http://www.coe.ufrj.br/~acmq/fuller2.jpg
http://www.coe.ufrj.br/~acmq/fuller3.jpg
http://www.coe.ufrj.br/~acmq/fuller4.jpg
M. Fuller, "Machine à influence à jet d'eau," La Lumiére électrique, Vol. 33, 39, 28 September 1889, pp. 623-626.

I didn't build this machine yet, but some classical electrostatic machines are just versions of the same mechanism using
rotating insulating disks with metal sectors instead of water drops.

Antonio Carlos M. de Queiroz


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