Sound 'cause of shadow spectacle'
From BBC News Online
Quote:
Mysterious bands of shadow which sometimes pass across the ground during an eclipse might be produced by sound pulses, according to a new theory.
"Shadow bands" have been observed travelling across the ground before and after totality - when the Moon completely covers the Sun.
Many attribute these regular light and dark bands to atmospheric turbulence.
But astrophysicist Dr Stuart Eves thinks the phenomenon could be down to something called infrasound.
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