Microscope

Question 1

Name the two types of microscope

Answer 1

Compound microscope and dissecting microscope

Question 2

Define the ocular lens

Answer 2

It is the lens you will look through. Your microscope has 2 ocular lenses. You can adjust the position of the ocular lenses to match the width between your eyes. The ocular lenses magnify the object 10X.

Question 3

Define objective lenses

Answer 3

Found on a rotating nose piece above the stage. Your microscope has 3 objective lenses: the scanning objective (4X magnification), low-power objective (10X magnification), and high-power objective (40X magnification).

Question 4

Define the total magnification

Answer 4

Calculated by multiplying the powers of the objective AND ocular lens (10X magnification). For example, when using the scanning objective (4X), the total magnifying power will be 40X (4 multiplied by 10).

Question 5

Define the stage

Answer 5

Holds the slide using mechanical stage clips. Slides must be placed BETWEEN both stage clips. Find the two stage adjustment knobs (hanging down from the stage) that move the slide horizontally (side to side) and vertically (toward and away from you).

Question 6

Define the coarse focus knob

Answer 6

(larger knobs on either side of the microscope) used to raise or
lower the stage. This knob is used for initial focusing of specimens at low power (4X or
10X). DO NOT USE THE COARSE FOCUS KNOB ON THE HIGH POWER
OBJECTIVE (40X).

Question 7

Define the fine focus knob

Answer 7

(smaller knob inside the coarse focus knob) used for precision focusing and for focusing on high power.

Question 8

Define the condenser

Answer 8

(under the stage) contains the iris diaphragm which is used to adjust
the amount of light that strikes the object on the slide. The diaphragm regulates the
degree of contrast and resolution of the magnified image.