Gravity Wave Detector as Random Voltage Source?

[Grant Richter]

I took a 220 uF 35 volt cap and hooked it up to
my oscilloscope probe on a 1X setting (1 meg in).
I was surprised to discover a 60 millivolt
charge on the open circuited cap. After letting
the cap discharge through the 1 M scope probe,
I then set the input sensitivity to 2 millivolts per division.

Banging the cap does produce DC fluctuations of about
1 millivolt. This is probably from compression of the electrolytic
rather than gravity but it may still be a useful effect.

Just sitting there, I observed no DC fluctuations
with a 1 megohm load across the cap (what I would have expected).

Rather than a gravity wave detector I suspect the cap
circuit is integrating the 1/f noise of either the input
or output stage. This would still be useful as a
simple source of fluctuation voltages that does not
need a noise tranny. Plus a bank of them would produce
uncorrelated random voltages.

I'll get around to building the actual op-amp circuit sometime.

----------
>From: matti at devo.com
>To: Rob <cyborg_0 at iquest.net>
>Cc: synth-diy <synth-diy at node12b53.a2000.nl>
>Subject: Re: Gravity Wave Detector as Random Voltage Source?
>Date: Tue, Aug 15, 2000, 12:48 AM
>

> Ummm, has anybody built this circuit? If it works, that may not mean that it's
> gravity doing its thing, and if it doesn't, then that may mean that it's
simply
> a bad circuit, but I nonetheless think it a little silly to be discussing this
> without firing up the soldering iron and getting messy.
>
>
> Quoting Rob <cyborg_0 at iquest.net>:
>
>> Well, er, thats what Im getting at! ;)
>>
>> I would *think* the normal "shot noise" that is generated from random
>> movement of the electrons due to heat differences and such would be
>> greater
>> than any effect gravity would have on electrons..
>>
>> Im sure gravity would have a sort of an effect on electrons near the
>> surface
>> (like static electricity) but in the actual material it would be too
>> small
>> to use.
>>
>> Hrm... maybe if you had some sort of electrolyte for the electrons to
>> move
>> freely in?
>>
>> Rob
>>
>
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