Paschen series

American  

[pah-shuhn] / ˈpɑ ʃən /

noun

Physics.

1. a series of lines in the infrared spectrum of hydrogen.

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Etymology

Origin of Paschen series

First recorded in 1920–25; see origin at Paschen-Back effect

Example Sentences

Figure 30.20 Energy-level diagram for hydrogen showing the Lyman, Balmer, and Paschen series of transitions.

From Textbooks • Aug. 12, 2015

The Paschen series and all the rest are entirely IR.

From Textbooks • Aug. 12, 2015

For the Lyman series, nf = 1 ; for the Balmer series, nf = 2 ; for the Paschen series, nf = 3 ; and so on.

From Textbooks • Aug. 12, 2015

Part of the Balmer series is in the visible spectrum, while the Lyman series is entirely in the UV, and the Paschen series and others are in the IR.

From Textbooks • Aug. 12, 2015