Re: [time-nuts] Pre-industrial timekeeping accuracy RE: Lifetime of glass containers

2009-06-15 Thread Joseph M Gwinn
time-nuts-boun...@febo.com wrote on 06/15/2009 05:49:35 PM: > > > -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 >

Re: [time-nuts] Pre-industrial timekeeping accuracy RE: Lifetime of glass containers

2009-06-15 Thread David
I'm getting slightly suspicious about the assumptions as to what was available 2000 years ago, the remarkable Antikythera Mechanism points to some technologies of 2000 years ago being almost up to medieval European standards. Clearly Antikythera indicates there were a few stunning items around, the

Re: [time-nuts] Pre-industrial timekeeping accuracy RE: Lifetime of glass containers

2009-06-15 Thread J. Forster
I'm no expert on ancient timekeeping, but nothing we'd call precision. Some possibles are: Water clocks Sand hour glasses Sun dials Time candles I think Christian Heugens (? sp) invented the pendulum for timekeeping. Your question is really more of a history of science. I just happen know a fiel

[time-nuts] Pre-industrial timekeeping accuracy RE: Lifetime of glass containers

2009-06-15 Thread Lux, James P
> -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