Anyone Can Help Me With This Please ? "Compare and contrast the structure and function of a compound light microscope and a scanning electron microscope. Be sure to discuss the structure and function of each as well as the function and usefulness of each when examining a specimen"

Question

anonymous · Answer

A compound light is your typical lab microscope, used to magnify specimens up to x1000. The ocular lens (the one that you look through) magnifies x10. There are four objective lenses that can be rotated to change the magnification. These are the 4x, 10x, 40x, and 100x objectives. To obtain the total magnification, multiply the objective magnification by that of the ocular lens. This microscope has a coarse and fine focus. This microscope allows for a 2-dimensional view of the structures of the specimen. The scanning electron microscope allows for a much higher magnification (20x-30,000x), as it uses a focused beam of high-energy electrons that generate signals on the surface of the specimens that show the morphology (texture), chemical composition, and crystalline structure and orientation of what makes up the sample. ( http://serc.carleton.edu/research_education/geochemsheets/techniques/SEM.html) Basically, one is for slight magnification for viewing structure, and the other (SEM) is for determining the chemical composition, spatial information, high magnification, etc.

anonymous · Answer

Eclipse has literary merit.