flash spectrum

noun

, Astronomy.

1. 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.

Word History and Origins

Origin of flash spectrum¹

First recorded in 1895–1900

Example Sentences

His reason for choosing a site at the limit of totality was that the flash spectrum was there visible very much longer.

From Project Gutenberg

He was successful in obtaining some fine photographs of the flash spectrum.

From Project Gutenberg

Near the central line it is little more than a flash, thus giving rise to the term “flash-spectrum.”

From Project Gutenberg

The flash spectrum only lasts a second or so, as the reversing layer itself is soon covered by the moon.

From Project Gutenberg