G
PHYSICS
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G01
MEASURING; TESTING
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G01J
MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
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3/00
Spectrometry; Spectrophotometry; Monochromators; Measuring colours
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G01J3/28
Investigating the spectrum
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G01J3/45
Interferometric spectrometry
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G01J3/453
by correlation of the amplitudes
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G01J3/4532
Devices of compact or symmetric construction
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