Isle Royale came to my attention through this list, otherwise I might
never have known of it.
I fly over/past it periodically on trips between Toronto and Thunder
Bay, so I see it from FL220 or so. The island is long and thin, vaguely
east-west, and along the shores there are parallel and much smaller
island-lets with gaps between.
These gaps act as irregular, natural diffraction gratings, and -
depending on the prevailing wind - the water between the small islands
and the main usually shows interference patterns.
I think of the coincidence that list members have photographed there,
uniting the photographic concepts of diffraction and interference and
the natural effects in the water.
Michael
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