Nicelli Alberto wrote: > > Sorry for the lapse : > "meridiana" is the italian word for "dial" > Alberto > > ---------- > > From: Nicelli Alberto > > Sent: venerdì 27 marzo 1998 16.40 > > To: '[email protected]' > > Subject: meridian on the Moon > > > > Dear dialists, > > yesterday a friend of mine asked me : > > can a >>meridian<<, built for a given latitude on Earth , be perfectly > > working somewhere on the Moon ? > > I like to share with you the answer to this nice question . > > After all Moon colonisation is in the near future and dialists will gain > > ground also there ! > > > > Best regards > > > > Alberto Nicelli > > Italy (45,5 N; 7,8 E) > > > > > > Placed at the corresponding lunar latitude, a sundial on the moon would record the Lunar Day, approxiamately 29.5 earth days! This is the same as the period of lunar phases.
I can conceive that there would be some practical use for such a dial in that knowing how long until sun set might be helpful. Consequently, the Babylonian markings would be most useful. Isn't that a strange thought, that one of the most ancient earthly inventions might have a practical use in a lunar colonisation! Claude Hartman Los Alamitos, California
