Compare and contrast the structure and function of a compound light microscope and a dissecting microscope. be sure to discuss when each would be more useful than the other

A scanning electron microscope has an electron gun that shoots electron beams at a specimen. It also has infrared cameras and Robinson detectors. A compound light microscope also has different types of lens while a scanning electron microscope only has one.Both microscopes have a specimen stage but the compound light microscope also has a slide and cover slip. A compound light microscope functions using visible light. A scanning electron microscope sends electron beams onto a specimen.

7/(b-36)=28/b
28b-1008=7b
21b=1008
b=48
a/72=28/b
a=72x28/48
a=42