A light echo is a phenomenon observed in astronomy. Analogous to an echo of sound, a light echo is produced when a sudden flash or burst of light, such as that observed in novae, is reflected off a source and arrives at the viewer some time after the initial flash. Because of their geometries, light echoes can produce the illusion of superluminal speeds.
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Famous quotes containing the words light and/or echo:
“To behold the day-break!
The little light fades the immense and diaphanous shadows,
The air tastes good to my palate.
Hefts of the moving world at innocent gambols silently rising,
freshly exuding,
Scooting obliquely high and low.”
—Walt Whitman (1819–1892)
“A work of art is an echo chamber which repeats what people say about it.”
—Mason Cooley (b. 1927)