Arm

Supports the tube and connects it to the base

Eyepiece

the lens at the top that you look through. They are usually 10X or 15X power.

Base

The bottom of the microscope, used for support

Body tube

Connects the eyepiece to the objective lenses

Coarse adjustment

Used for focus on scanning. Usually the low power lens is used enabling the movement of the tube.

Fine adjustment

Used for focus on oil. Moves the body tube for focussing the high power lens.

Objective lens

Generally, three or four objective lenses are found on a microscope, with ranges of 10X, 40X, 100X powers. Lenses are colour coded, the shortest lens is of the lowest power, and the longest lens is high power lenses.

Light/Mirror

A steady light source (110 volts) used in place of a mirror. If your microscope has a mirror, it is used to reflect light from an external light source up through the bottom of the stage.

Stage

The flat platform where you place your slides. Stage clips hold the slides in place. If your microscope has a mechanical stage, you will be able to move the slide around by turning two knobs. One moves it left and right, the other moves it up and down.

Stage clip

hold the slides in place.

Revolving nosepiece

This is the part that holds two or more objective lenses and can be rotated to easily change

The human eye cannot perceive objects less than
A) one inch.
B) one millimeter.
C) 0.1 millimeter.
D) one centimeter

C

The objective lenses of the compound light microscope are attached to the
A) stage.
B) base.
C) body tube.
D) rotating nosepiece

D

Which objective lens provides the least total magnification?
A) scan
B) low power
C) high power
D) oil immersion

A

The __________ increases or decreases the light intensity of the compound light microscope.
A) eyepiece
B) stage
C) adjustment knob
D) iris diaphragm

D

Basic lens cleaning is accomplished using
A) water.
B) lens paper.
C) a paper towel.
D) xylene

B

When preparing a wet mount specimen for viewing, it should be covered with _______.
A) clear paper
B) another glass slide
C) a coverslip
D) transparent tape

C

The total magnification achieved using a 10x objective lens with a 10x eyepiece lens is 20x.
A) True
B) False

B

A stereomicroscope is a good option to use for viewing rather large, opaque specimens.
A) True
B) False

A