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Why do I see purple lights at night?
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Started by neilepBoard Physics, Astronomy & Cosmology |
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30/12/2007 17:18:45 by Soul Surfer |
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Can oxygen deprevation at night cause severe mind numbing headaches upon waking?
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11/07/2019 03:50:00 by Karen W. |
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Why does AM (medium wave - MW) radio reception worsen or deteriorate at night?
Started by chrisBoard Physics, Astronomy & Cosmology |
Replies: 18 Views: 22854 |
24/12/2009 11:45:35 by chris |
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Could we detect evidence of civilisation on the night side of a transiting planet?
Started by thedocBoard Physics, Astronomy & Cosmology |
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12/03/2012 11:52:10 by imatfaal |
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Why do trees produce a circular optical illusion when illuminated at night?
Started by AllenGBoard General Science |
Replies: 6 Views: 14363 |
01/03/2015 08:38:42 by Colin2B |