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    Re: one second of time
    From: Lu Abel
    Date: 2008 May 15, 12:47 -0700
    I for one would love an explanation of how/when we came by our 24 hour day with 60 minutes per hour and 60 seconds per minute.   Yeah, I've heard all about how it comes from the Sumerian/Babylonian sexagesimal system, but with the European world presumably counting in decimal since 500 BC or so, why did all those smart people suddenly say "hey, let's confuse all those kids learning to tell time by using base 60!"

    Michael Dorl wrote:
    coralline algae wrote:
      
    In thinking about Galileo's experiments with pendulums and the length
    of the string, he must have had some standard to decide what the
    length of the string ought to be for accuracy to a second.  Going to
    look into this further as this seems to have set a new standard for
    clockmaking in general.
    
        
    As I remember, he used a time keeper you always have with you.  Your pulse.
    
    
    
      

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