Absorption Spectroscopy for Helium

Absorption Spectroscopy for Helium

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Credit: Phil Degginger/SCIENCE PHOTO LIBRARY

Caption: Absorption Spectra for Helium. Absorption spectroscopy is a measurement of the absorption of radiation, as a function of frequency or wavelength, due to its interaction with a sample. Absorption spectroscopy is used as an analytical chemistry tool to determine the presence of a particular substance in a sample and to quantify the amount of the substance present. It is also employed in studies of molecular and atomic physics, astronomical spectroscopy and remote sensing.

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Keywords: absorption, absorption lines, absorption of radiation, analysing, analysis, astronomical, astrophysical, atomic fingerprint, chemistry, fraunhofer lines, frequency range, he, helium, measurement, physics, spectra, spectral line, spectroscopy

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