[time-nuts] GPS disciplined mechanical clocks
jim77742 at gmail.com
Mon Mar 9 20:35:43 EDT 2009
I shall get the observatory to move their hydrogen masers onto a board on
drink cans immediately.
2009/3/10 Max Robinson <max at maxsmusicplace.com>
> Hal Murray wrote.
> Sounds like good science fair bait. Are there similar demos? Can you get
> two tuning forks to beat if held next to each other but get in sync if
> bases are touching? (or something like that)
> Yes. That's a standard sophomore physics demonstration.
> Max. K 4 O D S.
> Email: max at maxsmusicplace.com
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> ----- Original Message -----
> From: "Hal Murray" <hmurray at megapathdsl.net>
> To: "Discussion of precise time and frequency measurement"
> <time-nuts at febo.com>
> Sent: Monday, March 09, 2009 2:27 AM
> Subject: Re: [time-nuts] GPS disciplined mechanical clocks
> >> Allied to this discussion is the Loomis effect, discovered by the
> >> American millionaire who had three Shortt clocks running in his
> >> basement. They synchronised unless aligned at 120 degrees to each
> >> other. I wonder weather they were shaking the bedrock, or maybe the
> >> gravitational attraction between the 10 kg pendulums may have
> >> synchronised them. (See "Tuxedo Park" by Jennet Conant) He qualified
> >> as the first time nut.
> > It's on page 67-68.
> > When I told that story to a friend today, he gave me one back.
> > If you take 3 old fashioned mechanical metronomes and put them on a board
> > that is on a couple of soft drink cans for rollers, they will get in
> > It may take an hour...
> > Sounds like good science fair bait. Are there similar demos? Can you
> > two tuning forks to beat if held next to each other but get in sync if
> > their
> > bases are touching? (or something like that)
> > --
> > These are my opinions, not necessarily my employer's. I hate spam.
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