I use a sand clock at home. Typically I arrive at work 3 days late (or is it 4 days early?). -- Bradford R. Crain Quoting Craig Jungers <crjungers_at_gmail.com>: > On Fri, Jul 30, 2010 at 1:49 AM, PeterO > <rebyl_kayak_at_energysustained.com>wrote: > >> >> ............It looks as if Cook might have used a process such as >> recalibrating his clock for local time every day against sunrise, sunset >> and >> noon. The clock would then only have to remain within spec for 24 hours AND >> MEASURE LOCAL TIME and not for months or years to maintain synchronism with >> Greenwich. Presumably there were enough stars visible in both the southern >> and northern hemispheres so that Cook in Australia could use the tables >> developed at Greenwich TO TRY OUT THE LUNAR METHOD........... >> >> Thinking this over, the ancient Pacific navigators could have used very > much the same system using a sand-clock calibrated for 24 hours. Accuracy > would not have been so great but then they would at least have had some > measure of local time. > > > Craig *************************************************************************** PaddleWise Paddling Mailing List - Any opinions or suggestions expressed here are solely those of the writer(s). You must assume the entire responsibility for reliance upon them. All postings copyright the author. Submissions: PaddleWise_at_PaddleWise.net Subscriptions: PaddleWise-request_at_PaddleWise.net Website: http://www.paddlewise.net/ ***************************************************************************Received on Sat Jul 31 2010 - 10:22:27 PDT
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