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Published December 1927 | public
Journal Article Open

Two devices facilitating spectrometry in the far infrared

Abstract

In spectrometric investigations in the infrared two principal difficulties are the extremely small energy available in the long waves, and the relatively great intensity of the near infrared. This latter is of particular importance in using an echlette grating which reflects the short waves with great intensity in high orders. The arrangement here described was devised to overcome both of these inconveniences.

Additional Information

© Copyright 1927 Optical Society of America.

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August 21, 2023
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