[time-nuts] GPS disciplined mechanical clocks

Max Robinson max at maxsmusicplace.com
Mon Mar 9 19:42:36 EDT 2009


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 their
bases are touching?  (or something like that)

Yes.  That's a standard sophomore physics demonstration.

Regards.

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 sync.
> It may take an hour...
>
> 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 
> their
> bases are touching?  (or something like that)
>
>
> -- 
> These are my opinions, not necessarily my employer's.  I hate spam.
>
>
>
>
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