MICROSCOPES Flashcards
1
Q
What is an electron microscope
A
It uses a beam of electrons (instead of light ) in a vacuum which is focused with magnets. It has a greater resolution than a light microscope
2
Q
What is an instrumental resolution
A
It is the ability to distinguish two points as separate from each other
3
Q
Explain why some cell structures can be seen with an electron microscope but not with a light microscope
A
Because some cells are to small to be seen under a light microscope
4
Q
Calculate total magnification using an equation
A
Total magnification
Objective lens magnification x. eyepiece lens magnification
5
Q
Image size
A
Actual size x magnification
6
Q
Magnification
A
Actual length of scale bar
———————————
Length the scale bar represents
