Re: Electrometer insulators (fwd)

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Original poster: Steven Roys <sroys@xxxxxxxxxx>



---------- Forwarded message ----------
Date: Tue, 31 Oct 2006 21:5:22 -0800
From: David Dameron <ddameron@xxxxxxxxxxxxx>
To: High Voltage list <hvlist@xxxxxxxxxx>
Subject: Re: Electrometer insulators (fwd)


Hi Peter and all,

The magnet(s) would be rotating about its axis, so the induction would 
be much like unipolar, but it still makes the experiment more 
difficult. The experiment was done twice in the 1970's, one measured a 
charge, one did not, so it wasn't resolved, even though the 2 experiments were 
not exactly the same. The underlying theory isn't totally resolved either, this 
experiment may prove some predictions of Ampere or Weber, which is the theory 
which predicts longitudinal forces in wires, a relation to HV 
demonstrations many are familiar with.

 

Another series of experiments to show that the effective mass of electrons 
change with their electrostatic potential, predicted by Weber, has not panned 
out.

-Dave D.


---------- Forwarded message ----------

Date: Tue, 31 Oct 2006 16:35:44 +0800

From: Peter Terren  pterren@xxxxxxxxxxxx  

I am surprised that you hope to measure minute charges in the presence of 


rotating magnets that will induce fields and currents in everything 
metallic 

unless you have huge shielding against both static fields and varying 


fields. But I have little background in electrostatics if that is even what 


you are planning.

 

Peter