what is absorbance?

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2007-03-30 01:07:10 · 2 answers · asked by mogojok 1 in Science & Mathematics ➔ Chemistry

2 answers

Absorbance is the capacity of a substance to absorb radiation, expressed as the common logarithm of the reciprocal of the transmittance of the substance.

2007-03-30 01:10:18 · answer #1 · answered by Anonymous · 0⤊ 0⤋

I0 is the intensity of a beam of electromagnetic waves on the front face of a medium . I is the intensity after the medium

Absorbance is given by A = log (I0/I)

see the link

2007-03-30 08:41:40 · answer #2 · answered by maussy 7 · 0⤊ 0⤋