An absorption spectrum plots a pigment

An absorption spectrum plots a pigment - Anabsorption

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An  absorption spectrum  plots a pigment’s light absorption versus wavelength. The light reaction can perform work with those wavelengths of light that are absorbed. There are several pigments in the thylakoid that differ in their absorption spectra. Chlorophyll a,  the dominant pigment, absorbs best in the red and violet-blue wavelengths  and least in the green. Other pigments with different structures have different absorption spectra. Collectively, these photosynthetic pigments determine an overall  action spectrum  for  photosynthesis. An action spectrum measures changes in some measure of photosynthetic activity (for  example, O 2  release) as the wavelength is varied. The action spectrum of photosynthesis was first demonstrated in 1883 in an elegant  experiment performed by Thomas Engelmann.
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This note was uploaded on 01/04/2012 for the course BSC BSC1005 taught by Professor Orlando,rebecca during the Fall '10 term at Broward College.

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