absorption spectrum

noun

, Physics.

1. the spectrum formed by electromagnetic radiation that has passed through a medium in which radiation of certain frequencies is absorbed.

absorption spectrum

noun

1. the characteristic pattern of dark lines or bands that occurs when electromagnetic radiation is passed through an absorbing medium into a spectroscope. An equivalent pattern occurs as coloured lines or bands in the emission spectrum of that medium

absorption spectrum

1. The range of frequencies of electromagnetic radiation readily absorbed by a substance by virtue of its chemical composition.
2. See more at atomic spectrum

Word History and Origins

Origin of absorption spectrum¹

First recorded in 1875–80

Example Sentences

The salts have a faint pink colour, and show a faint absorption spectrum; the spark spectrum is brilliant and well characterized.

From Project Gutenberg

This colour possesses an absorption spectrum (figured at p. 55).

From Project Gutenberg

The liquid is without colour, and gives no absorption spectrum.

From Project Gutenberg

It seems related to both almandine and pyrope, and shows the absorption-spectrum of almandine.

From Project Gutenberg

It is conspicuous by its absorption spectrum in many of the white stars.

From Project Gutenberg