Re: Sunday Morning Puzzle.

[brian whatcott <inet@INTELLISYS.NET>]

At 12:20 9/30/01 -0700, Bernard Cleyet  wrote:

> Eotvos used a resonance method to increase sensitivity.
> I've been  alternating the ext. masses to get the pendulum
> swinging from rest.
> It takes so long to set the zero, I've hesitated rotating the pivot to
> start the pendulum, but will try that method.

Seems like there is more mileage to be had from this old experiment.
Instead of holding the radius constant, it is interesting to consider
very large plates, which can be very close. Their gap can easily
be measured by electrical resonance methods (as a variable cap) or by
laser fringe counting, these days.

brian whatcott <inet@intellisys.net>  Altus OK
                Eureka!