PSN-L Email List Message
Subject: Re: Springs and Gravity or Magnetism
From: "Geoffrey M. Voeth" gmvoeth@...........
Date: Mon, 8 Aug 2011 15:24:48 +0000
I'm Not Trying to be a smartass but,
ShaZam ??? !!!
Is there any way to make the magnetic thing be linear
like possibly using a Hall effect sensor an electro magnet and a pid loop
like a automobile speed control ?
I am possibly thinking of using magnetic repulsion/attraction to
reduce the pull of gravity and thus increase the
period of a vertical geophone ?
You need an acceleration in the opposite direction
not quite as powerful as the Earths ?
Does not matter what causes the acceleration in
the opposite direction (UP) ?
Any ideas in how to do such a thing ?
Regards,
geoff
-----Original Message-----
From: Christopher Chapman
Sent: Saturday, August 06, 2011 6:12 PM
To: psnlist@..............
Subject: Re: Springs and Gravity or Magnitism
Subject: Re: Springs and Gravity or Magnitism
Subject: Re: Springs and Gravity or Magnitism Hello Chris, It is my guess by what you say it may be possible to create a spring
with just about any relationship like fitting the curve of force like any graph of a conic section ? . Hi Geoff, Probably up to
cubic over small ranges..I understand magnetic attraction to be log base two ? Double the distance and divide the force by four ?
Same with electrostatic ?? No, It's more complicated. You have two poles on every magnet. The force between any two poles is
inverse square law, but the force on a magnet involves both poles. So there may be a rotational as well as a linear forces.
Regards, Chris
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