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کشاورزی::
اسپکتروفتومتر
When measuring color with a spectrophotometer, the standard illuminant ta- ble is a selection in the instrument firmware or software.
Certain analyti- cal spectrophotometers are designed to meas- ure percent absorbance at selected wave- lengths.
Figure F5.1.7 A color spectrophotometer measures the reflectance of a sample to compute color.
The spectrophotometer measures the object for spectral data and the computer converts the data into the tristimulus values for a selected illuminant and observer (Fig.
The spectrophotometer has been refer- enced because the measured spectral data can be converted into tristimulus numbers that cor- respond to perceived color.
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