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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