Jim Stewart wrote:
wrote:

I figured since this uses a ball-bearing to generate sine waves
(mechanisms like that have been seen here now and then), this would
have some interest:

http://www.tatjavanvark.nl/harmonium/


It has some resemblance to the guidance
computer in an old Pershing I missile.

Umm, yeah! She's built one of those, too. See "Inertial
Navigator Platform", and check out the video of her picking up
the stable platform and moving it around while it is running.
Extremely cool!

Jon