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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Timing Lunars with a Rock
From: Alexandre Eremenko
Date: 2005 Jul 18, 05:14 -0500
From: Alexandre Eremenko
Date: 2005 Jul 18, 05:14 -0500
There is one more problem with such crude pendulum which has not been addressed:-) And the effect is more substantial than some other effects mentioned so far: The preiod of a pendulum DOES depend on the amplitude. You can neglect this dependence onbly if your pendulum is very long and the amplitude is very small. A On Sun, 17 Jul 2005, Frank Reed wrote: > Here's a nice trick. A rock on a string > and an assistant with a bag of > pebbles will make do for a clock for > timing the separate sights involved in a > lunar observation.
