Ingenious! (Faraday cup and saucer, indeed ;)
For electrons slow enough not to produce secondary emission I would have
thought a simpler collecting device, not a hollow one, would work: a grid
surrounding a solid conductor, the latter positive wrt the former.
For the ultra-low energy emitter photo-emission should work better than
thermo-emission as it will give more homogeneous energies (precisely
controlled by incident light wavelength aren't they?)
Michel
----- Original Message -----
From: "Frederick Sparber" <[EMAIL PROTECTED]>
To: <vortex-l@eskimo.com>
Sent: Thursday, April 13, 2006 5:14 PM
Subject: Re: Electrogravity & Proton Repulsion of Electrons
Michel Jullian wrote:
From: "Frederick Sparber" <[EMAIL PROTECTED]>
Sent: Thursday, April 13, 2006 2:33 PM
> Electrically fieldless, but not gravity fieldless, Michel.
That's what I had understood Fred, besides if it was gravity fieldless we
would already have discovered antigravity and there would be nothing to
test
with this tube :)
Precisely
> If electrons are released at the bottom and gravity repels them upward,
> I think a Faraday Cup can be used to detect them.
I'll probably make a fool of myself but what's a Faraday cup, and how
would
you produce the slow electrons?
A Faraday cup is a match to a Faraday (flying?) saucer.
Only kidding.
I googled up this image. If the evacuated hollow tube has a heated
filament
(or photo-emissive device) in a can at the bottom with a hole in the top
that allows an electron of nearly zero upward velocity (another faraday
cup?)
if the electrons repel gravity they should fall up with force F = ma where
they are detected/timed by an electrometer tied into the faraday cup
collector.
http://home.earthlink.net/~chutko/ionmeas.htm
" A Faraday cup consists of two coaxial isolated cylinders: grounded outer
screening cylinder and inner collecting one (collector). It works like
"black body" in optic - absorbs all particles which pass into collector
and
significantly decrease the output of secondary particles created due to
interaction of primary particles with the surface of collector. The ratio
of the input aperture diameter to the length of the collector should be
not
less than 1 : 5."
Fred
Best wishes
Michel
