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.
Calvin cycle depends on the ATP and NADPH produced through the light reactions which can only occur when sunlight is present and mostly during the day as the moon doesn't prov â¦ ide enough light energy for photons to create enough energy.