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 field diaphragm in the base of the microscope controls only the width of the bundle of light rays reaching the condenser--it does not affect the optical resolution, numerical aperture, or the intensity of illumination.