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Experimental infrared spectroscopy

APR 01, 1951
Infrared spectroscopy, a field of physics which has passed through many periods of romantic discovery, has in recent years been of great use to applied research—not only in physics but in many adjacent sciences.

DOI: 10.1063/1.3067195

John Strong

The infrared spectrum was discovered by Herschel in 1800. He found that a thermometer was heated by invisible radiations when he placed it beyond the red end of a solar spectrum formed by a glass prism. From this primitive discrimination between the visible and invisible, experimental physicists have refined their procedures until now the 15,000 cm−1 compass of that invisible spectrum is resolved into some 30,000 separable subdivisions of 1/2 cm−1 width, with prospects of resolving it into 200,000 subdivisions in the near future.

More about the Authors

John Strong. Johns Hopkins University.

This Content Appeared In
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Volume 4, Number 4

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