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Objective that should be in place, both when beginning to use the microscope & when putting it away.


Ability of microscope to discriminate two close objects as separate.


Image projected to ocular.

Real Image

Image produced by magnification of real image by ocular lens.

Virtual Image

Magnifying power of ocular multiplied by magnifying power of objective.

Total Magnification

Uniform circle of light that appears when you look into ocular.

Field of View

Distance between objectives & the slide.

Working Distance

After swiching from low power to high power, _____ of the specimen is visible. (more or less).


Resolution of human eye in a) micrometers, b) millimeters.

a. 100 micrometers
b. .1 millimeters

Resolution of microscope in a) micrometers, b) millimeters.

a. .2 micrometers
b. .0002 millimeters

Term used to inidicate if object is in focus at lower power, it will also be in focus at higher power.


Part of microscope that regulates amount of light reaching the object.

Iris Diaphragm Lever

Total magnification of 100X requires the use of 10X ocular lens with a _____ objective lens.


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