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Coarse focus on a microscope is used only when you are using the lowest objective lens. You use it to get the object magnified mostly. The fine focus is then used to adjust the resolution to the viewer's eyesight.
It is an optical instrument that gathers light from the object being observed and focus the light rays to produce a real image. They are also called objectives. In microscopes, lenses are found at the bottom near the sample. They are mainly used at telescopes, microscopes and cameras.
the mirrors help focus it
Optical microscopes use refractive lenses, typically of glass and occasionally of plastic, to focus light into the eye or another light detector. hope it helps... kinda
Fluorescent microscope
Adjustment knobs are used to focus light in a light microscope.
Lens
Adjustment knobs are used to focus light in a light microscope.
Adjustment knobs are used to focus light in a light microscope.
Lens
A light source on a microscope helps make the object that you're looking at easier to see. It brightens up the view so the object can be seen more clearly and can be more "in focus".
So that you are looking at the details of the object and not the light.
Fine focus is typically in reference to studying an object under a microscope. Fine focus means that the person operating the microscope focuses on one part of a specimen at a time.
adjustment knobs
Coarse focus on a microscope is used only when you are using the lowest objective lens. You use it to get the object magnified mostly. The fine focus is then used to adjust the resolution to the viewer's eyesight.
A telescope must gather large amounts of light from a dim, distant object; therefore, it needs a largeobjective lens to gather as much light as possible and bring it to a bright focus. Because the objective lens is large, it brings the image of the object to a focus at some distance away
Mirror - It is used to reflect light through the object and lenses of the eye.