ØSpectrophotometer - an instrument that measures the
amount
of light absorbed, or the intensity of color at a given
wavelength.
Ø
ØThe intensity of
color can
be given a numerical value by
comparing the amount of light prior to passing it
through
the sample and after passing through the sample.
Ø
ØThese quantitative
measurements of light absorbed are the
Transmittance and the Absorbance.
Ø