Earlier this week I made a claim that I am a Time Nut from way back. In further evidence of that, I report that I actually clipped and saved that article.
Reference: Scientific American, September 1974, pages 192 - 198, in a section called The Amateur Scientist. The man made a quarts crystal oscillator that sent a pulse to an electromagnet that was placed near a permanent magnet mounted on the pendulum of a wall (not a grandfather) clock. The pendulum was set a bit slow for its 72 per minuet beat and the electronics gave it a push each cycle to make it swing at the correct rate. He had faster and slower count settings to adjust its rate. The ultimate check was still listening to WWV while looking at the clock. -- Dennis O'Keefe New Paltz, New York On Wed, 04 Jan 2006 23:11:07 -0800 Hal Murray <[EMAIL PROTECTED]> wrote: >> http://www.telechron.com/ > > Neat. Thanks. > > I think we had one like that back in grade school. That was a long time >ago. > > There was an article in Scientific American 20 or 30 years ago. The idea >was to make an old grandfather clock keep very good time by adding a magnet to > the pendulum so you could gently push/pull it. > > Anybody remember that one? Anybody build one? > > > -- _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
