File:IR spectroscopy apparatus.svg

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Description
English: Schematics of a two-beam absorption spectrometer. A beam of infrared light is produced, passed through an interferometer (not shown), and then split into two separate beams. One is passed through the sample, the other passed through a reference. The beams are both reflected back towards a detector, however first they pass through a splitter, which quickly alternates which of the two beams enters the detector. The two signals are then compared and a printout is obtained. This "two-beam" setup gives accurate spectra even if the intensity of the light source drifts over time.
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7 April 2011

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current11:07, 7 April 2011Thumbnail for version as of 11:07, 7 April 2011660 × 304 (79 KB)wikimediacommons>Danhwhite background

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