Question

what is meant by optical density ​

Answer 1

Answer:

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Explanation:

Optical density is defined by the equation: Density = log 10 I 0 * I 1 , ... For example, if the incident light intensity is 1000 units and the transmitted intensity is 1/100 of this, viz., 10 units, then the density is given by: Density = log 1000 10 = log 100 = 2 .

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Answer 2

Explanation:

The optical density of a substance is the logarithmic ratio of the intensity of transmitted light to the intensity of the incident light passing through the substance. It is otherwise measured as the absorbed radiation of the corresponding wavelength. Optical density refers to the absorbance of a substance.