[email protected] wrote on 06/15/2009 05:49:35 PM: > > > -----Original Message----- > > From: [email protected] > > [mailto:[email protected]] On Behalf Of J. Forster > > Sent: Monday, June 15, 2009 2:34 PM > > To: Discussion of precise time and frequency measurement > > Subject: Re: [time-nuts] Lifetime of glass containers > > > > Interestingly, I recently had dinner with an archeology > > professor, interested in the Etruscan period. She had just > > discovered a flatish piece of glass i9n a dig, thousands of > > years old, and believes it was made essentially like rolling > > out dough on a slab while red hot. > > > > -John > > > > Returning to a more time-nuts-y topic.. > > What sort of time measurement accuracy would folks 2000 years > ago have had? > > For instance, were they aware of the (relative) constancy of > the swings of a pendulum of constant length? > > I remember stories from school about Galileo using his pulse as > a clock. They're probably apocryphal, and I would think that he > would have easy access to other things that tick once a second > or there abouts (dripping water, etc, if not swings of a pendulum). > > I'm also familiar with the famous Shakespearean anachronism of > the striking clock in "Julius Caesar", and the usual commentary > says the Romans had only sundials and clepsydra. So how good > is a clepsydra? What if we go back a 1000 years?
Allan collected this in HP AN-1289: <http://www.allanstime.com/Publications/DWA/Science_Timekeeping/> Joe Gwinn _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
