> -----Original Message----- > From: time-nuts-boun...@febo.com > [mailto:time-nuts-boun...@febo.com] 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? _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.