HOW A SPECTROMETER WORKS
A polychromatic source provides “white” light which is extracted by a monochromator at the user’s desired wavelength. The intensity of the radiation is measured after it has passed through the analysed sample. This intensity is compared to a reference value. The output value is the result of this comparison.
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| 1 mm wide glass |
10 mm wide glass |
10 mm wide "quartz" |
50 mm wide glass |
10 mm wide glass, small volume |
10 mm wide glass, very small volume |
10 mm wide plastic, shrinked |
Working principle of a spectrophotometer
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