[time-nuts] gravity controlled pendulumn clock?

Jim Lux jimlux at earthlink.net
Tue Dec 13 12:32:05 EST 2011


On 12/13/11 8:57 AM, Bob Bownes wrote:
> What's metric or Common Measure about seconds? ;)
>
> Bob


AN excellent point.. aren't seconds the only unit that is the same in 
basically all measurement systems?  there's cgs, mks, SI, Imperial, US 
Customary, Avoirdupois, etc  and they all use seconds.


And since this is timenuts.. where did the second originate (I recall a 
story about Galileo counting heartbeats for his experiments rolling 
balls down ramps... but that sounds a bit too convenient).

Is it just dividing hours by 60 to get minutes and minutes by 60 to get 
seconds  (as my daughter was wont to say when learning fractions: curse 
those Babylonians)

http://tf.boulder.nist.gov/general/pdf/2209.pdf

makes it seem to be Claudius Ptolemy






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