Re: Water dropper (was A solution for...) (fwd)

[Steven Roys <sroys@xxxxxxxx>]

---------- Forwarded message ----------
Date: Sat, 14 Feb 2004 17:10:27 -0800
From: Jim Lux <jimlux@xxxxxxxxxxxxx>
To: High Voltage list <hvlist@xxxxxxxxxx>
Subject: Re: Water dropper (was A solution for...) (fwd)

> ---------- Forwarded message ----------
> Date: Fri, 13 Feb 2004 10:57:41 -0200
> From: Antonio Carlos M. de Queiroz <acmq@xxxxxxxxxxxxxxxx>
> To: High Voltage list <hvlist@xxxxxxxxxx>
> Subject: Water dropper (was A solution for...)
>
> High Voltage list wrote:
>
> > From: Jim Lux <jimlux@xxxxxxxxxxxxx>
>
> > I think Antonio has a scanned article from a Frenchman about 100 years
ago
> > who built a very nice "shower head" type water dropper, with 4 heads,
four
> > charging rings and 4 collectors.
>
> It's paper p62 in http://www.coe.ufrj.br/~acmq/epapers.html
>
> I have also a version in English (p103):
> http://www.coe.ufrj.br/~acmq/fuller1889.pdf
>
> A version of the same machine with sectored disks instead of water
> drops is Toepler's symmetrical machine:
> http://www.coe.ufrj.br/~acmq/toepler.html
>
> Antonio Carlos M. de Queiroz
>

I would assume that one wants fairly big droplets.. less likely to be pushed
around by electrostatic forces?  I suppose there's also a tradeoff between
charge on a droplet, size of droplets (Radius of Curvature and surface area)
and number of droplets per second.

I was thinking of one of those shower heads with an array of holes, that run
under low pressure, and have big drops.  As opposed to a high pressure
spray.

(it just occurred to me that you could make a nifty machine that shoots a
stream of droplets up through the rings, and then back down through another
set.)