flash spectrum

noun Astronomy.

the emission spectrum of the chromosphere of the sun, which dominates the solar spectrum in the seconds just before and after a total solar eclipse.

Origin of flash spectrum

First recorded in 1895–1900

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for flash spectrum

Historical Examples of flash spectrum

Near the central line it is little more than a flash, thus giving rise to the term “flash-spectrum.”
Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 10
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