Next message: Royer, Doug: "Re: Green Flash and Longitude"
On a page of unresolved issues on Andrew Young's collection of web pages on
the "green flash", he writes:
"In his 'History of Nautical Astronomy', C. H. Cotter makes the tantalizing
remark that 'The method of finding longitude from an observation of the Green
Flash which occurs in favourable meteorological conditions when the upper
limb of the Sun sinks below the visible horizon has been suggested on many
occasions during the present century.' "
Andrew Young then asks:
"Oh? Care to cite a reference? Where did this idea come from? Has anyone out
there ever heard of this before? Let's hear when some of those 'many
occasions' actually occurred! "
Good questions. So has anyone on Navigation-L ever heard of this? I haven't.
I can't think of any way to make sense of the idea (green flash for
longitude??), but that doesn't mean no one ever suggested it, of course.
-FER
42.0N 87.7W, or 41.4N 72.1W.
www.HistoricalAtlas.com/lunars
