Paschen series

[pah-shuh n] /ˈpɑ ʃən/

noun, Physics.

a series of lines in the infrared spectrum of hydrogen.

Origin of Paschen series

1920-1925

1920-25; see Paschen-Back effect

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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