A more advanced 100 square foot colored concrete patio installation costs homeowners between $713 and $933 on average, which includes $188 to $204 worth of materials and $525 to $728 worth of labor costs.
The Diaphragm or diaphragm control lever regulates the amount of light passing through the slide specimen on the microscope stage.
The colored part of the eye that controls the amount of light that  passes through the pupil is the iris. The iris is made up of two  layers, the stroma and the pigmented epâ¦ithelial cells. 14 people found this useful.