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An annular eclipse occurs when the Sun and Moon are exactly in line, but the apparent size of the Moon is smaller than that of the Sun. Hence the Sun appears as a very bright ring, or annulus, surrounding the outline of the Moon.
Originally posted by Phage
reply to post by weedwhacker
Another fun idea to kick around. The electromagnetic spectrum (UV, visible, IR, etc.). Why wouldn't there be a gravitic spectrum? Or a magnetic spectrum. I certainly don't have the math to know either way. But it's pretty far OT so never mind.