Electromagnetically-driven pendulum (was Re: IBM ScanMaster)

From: John Allain <John.Allain_at_Donnelley.InfoUSA.Com>
Date: Thu Apr 5 12:25:46 2001

>grandfather clock, with the pendulum driven that way instead of by
>weights. Has anything like that been built commercially?

I wish you hadn't mentioned that.
Accessing memory... There was an article I read in
the 70's Ciarcia? That took an existing GF clock and
added crystal driven tiny solenoid hidden behind the
bob that locked it to its "correct" frequency.
Then I guess you gained any accuracy you Xtal could
give you.

John A.
Received on Thu Apr 05 2001 - 12:25:46 BST