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کشاورزی::
رنگ سنج سه محرکی
Tristimulus colorimeters are used to meas- ure color in certain food applications.
It should be noted that both spec- trophotometers and tristimulus colorimeters are primarily utilized as instruments to measure the color difference between a standard and a trial, rather than as absolute devices.
F5.1.10), became very popular because it described color and color difference in visual terms and was readily available with color in- struments (tristimulus colorimeters).
A tristimulus colorimeter has three main compo- nents: (1) source of illumination, (2) combination of filters used to modify the energy distribution of the incident/ reflected light and (3) photoelectric detector that converts the reflected light into an electrical output.
Measurements made on a tristimulus colorimeter are normally comparative.
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