Why do flies fly under a ceiling lamp during the daytime?
by Guardian Staff from on (#13H0K)
Readers answer other readers' questions on subjects ranging from trivial flights of fancy to profound scientific concepts
Why do flies fly under a ceiling lamp during the day time, in a curiously dithering way, then suddenly make a sharp turn, repeating this endlessly - and how do they make that sharp turn?
Anna Hughes, London, W4
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