8BI: Microscope Basics

Identify the parts of the microscope.

a

b

c

d

e

f

g

h

i

j

Base

Light Source

Objective Lenses

Stage

Fine Focus Knob

Eyepiece

Arm

Stage Clips

Nosepiece

Coarse Focus Knob

What is the magnification of the eyepiece (ocular lense)?

• x10

• x40

• x5

• x2

Used to focus the microscope on low and medium power, never on high power.

• Course Focus knob

• Fine focus knob

• Objective lens

• Stage

The lens that you look through to view the specimen

• Focus knob

• Eyepiece (ocular lens)

• Head

• Eyepiece (body tube)

The 3 major lenses used for viewing specimens

• Objective lens

• Eyepiece (ocular lens)

• Focus knob

• Base

A rotating turret that holds the objective lenses.

• Nosepiece

• Objective lens

• Base

• Mirror/Lamp

Supports the microscope. It also carries the microscopic illuminators.

• Nosepiece

• Mirror/lamp

• Base

• Head

A flat platform where the specimen is placed for viewing.

• Stage

• Base

• Arm

• Head

Rectangular glass plate on which the specimen is mounted.

• Slide

• Cover slip

• Nosepiece

• Stage

Calculate the Total Magnification if the Eye Piece Magnification is 10X and the High Power Objective is 40X.

• Total Magnification 50X

• Total Magnification 400X

• Total Magnification 40X