Microscopy

Question 1

Body tube

Answer 1

Holds the eyepiece at the proper distance from the objective lens

Question 2

Arm

Answer 2

Supports the body tube, use for carrying the microscope

Question 3

Stage

Answer 3

Platform that supports the microscope slide

Question 4

Base

Answer 4

Supports the microscope

Question 5

Objective lens

Answer 5

Each contains a lens with a different power of magnification (4x - low power, 10x - medium power, 40x - high power) engraved on the objective.

Question 6

Coarse-adjustment knob

Answer 6

Focuses the image under low power

Question 7

Fine-adjustment knob

Answer 7

Sharpens the image under medium and high power magnification

Question 8

Eyepiece (ocular lens)

Answer 8

Contains a magnifying lens (usually 10x power, engraved beside the lens) that you look through.

Question 9

Revolving nosepiece

Answer 9

Holds and turns the objectives into viewing position

Question 10

Stage clips

Answer 10

Holds the microscope slide in place

Question 11

Condenser lens

Answer 11

Directs light to the object being viewed

Question 12

Diaphragm

Answer 12

Controls the amount of light entering the body tube

Question 13

Light source

Answer 13

Directs light through the diaphragm, the specimen, and the lenses. Some microscopes have a mirror instead of a light that must be adjusted to reflect light from the source into the body tube.