An optical microscope uses a system of (usually) glass lenses to focus the small amounts of light given off by the subject into your eye.
The optical microscope is a type of microscope which uses visible light and a system of lenses to magnify images of small samples
the optical microscope is a type of microscope that uses visibal light and a system of lenses to magnify images of small samples
When you use a compound microscope, the eyepiece must be away from the stage and behind the arm. If you wanted to observe something then you use a wet mount slide. Put a drop of water, use a cover...
microscopes use the lens