Don Gardner, Mir16609@aol.com, writes: > Last evening when Mir entered eclipse at 23:25:40 UTC, it appeared to > turn dark red (like a lunar eclipse) for several seconds, then bright > red (like Mars) for about 2 seconds before going completely dark. One reason red light can be perceived as "dark" is dimness, or low intensity. Another reason might be that its frequency is very low, so low that the eye is quite insensitive, despite its high intensity. If this second explanation should apply to your observation, her recovery of brightness might have been caused by a frequency shift toward the blue. Might you have seen the muted echo of a spectacular green flash? Cheers. Walter Nissen wnissen@tfn.net -81.8637, 41.3735, 256m elevation --- Simple test of intellectual strength: In the political arena: Do you visit political Web sites, including news and commentary? If you spend your time reading from sources sympathetic to your point(s) of view, then you are a sheep with no mind of your own. Conversely, if you scour sites of diverse opinions, seeking out points of view with which you may disagree, then you have a strong and powerful mind. ----------------------------------------------------------------- Unsubscribe from SeeSat-L by sending a message with 'unsubscribe' in the SUBJECT to SeeSat-L-request@lists.satellite.eu.org http://www2.satellite.eu.org/seesat/seesatindex.html
This archive was generated by hypermail 2b29 : Fri Jan 14 2000 - 10:02:50 PST