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Paschen series

American

[pah-shuhn] / ˈpɑ ʃən /

noun

Physics.

a series of lines in the infrared spectrum of hydrogen.

Etymology

Origin of Paschen series

First recorded in 1920–25; Paschen-Back effect

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.