Hi Yes, that's the idea.
I suspect there is a good reason why not to use a rotary pendulum. I've always thought they were pretty neat .... Bob On Jan 9, 2010, at 4:10 PM, Thomas A. Frank wrote: > Rather like the Shortt clock, only magnetically coupled. > > Nifty idea. > > Tom Frank, KA2CDK > > > On Jan 9, 2010, at 3:36 PM, Bob Camp wrote: > >> Hi >> >> How about a rotary pendulum on a quartz fiber spring with some kind of trick >> magnets to drive it / read it out? Put the pendulum and spring inside an >> evacuated glass envelope to get around the vacuum pump issue. The enclosure >> could be pretty small. >> >> Drive the magnets with a second external clock, and feedback compensate it. >> Let the external clock do all the readout via a very normal gear and >> pointers system. The trick would be getting the feedback loop to work purely >> mechanically with enough gain to "unload" the master pendulum. >> >> Bob >> >> >> On Jan 9, 2010, at 2:07 PM, Lux, Jim (337C) wrote: >> >>> OK.. So we're moving back in electrical technology.... >>> But what about mechanical? Could modern technology get a substantial >>> (>order of magnitude) improvement over 19th century chronometers (either >>> pendulum or balance wheel or whatever). I know there's some really good >>> quartz fiber torsional spring schemes, but I think they still need >>> electrical means to keep them moving and to read it out. >>> >>> So how good can one do with a mechanical, hydraulic, (or chemical, I >>> suppose) system? Let's assume it has to have a "direct" readout that is >>> human readable by a causal bystander. (this starts to sound like the >>> 10,000 year clock or whatever it is..) >>> _______________________________________________ >>> time-nuts mailing list -- [email protected] >>> To unsubscribe, go to >>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>> and follow the instructions there. >>> >> >> >> _______________________________________________ >> time-nuts mailing list -- [email protected] >> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
