re: Mir and Shadow Entry Q

From: Walter Nissen (
Date: Fri Jan 14 2000 - 10:21:02 PST

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    Don Gardner,, 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?
    Walter Nissen         
    -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.
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