flash spectrum
nounAstronomy.
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
1First recorded in 1895–1900
Words Nearby flash spectrum
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
How to use flash spectrum in a sentence
His reason for choosing a site at the limit of totality was that the flash spectrum was there visible very much longer.
He was successful in obtaining some fine photographs of the flash spectrum.
Near the central line it is little more than a flash, thus giving rise to the term “flash-spectrum.”
The flash spectrum only lasts a second or so, as the reversing layer itself is soon covered by the moon.
Astronomy for Young Folks | Isabel Martin Lewis
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