Opacity (optics) Opacity is the measure of impenetrability to electromagnetic or other kinds of radiation, especially visible light. In radiative transfer, it describes the absorption and scattering of radiation in a medium, such as a plasma, dielectric, shielding material, glass, etc.
Answers.comÂ® is making the world better one answer at a time. during Calvin Benson cycle carbon dioxide from the air is used to produce glucose and other compounds.
This doesn't mean the Calvin cycle only occurs in the dark -- it just doesn't require energy from light for the reactions to occur. The primary function of the Calvin cycle is carbon fixation, which is making simple sugars from carbon dioxide and water.