Biology- Compound Light Microscope Exam

Ocular Lens

for eyes to look through and provide magnification of the specimen

Objective Lens

magnify the specimen, usually include 4X, 10X, 40X, and 100X

Revolving Nosepiece

holds the objectives and revolves to change the

magnification power

Fine Adjustment Knob

brings specimen into sharp focus

Coarse Adjustment Knob

moves large distance and brings specimen into approximate focus.
(This knob should only be used with 4X and 10X objectives) C is first before F

Stage

supports the microscope slides

Stage Clip

holds microscope slides in place ( with stage)

Stage manipulator knobs

move stage forward/backward and right/left to center the specimen

Condenser

focuses the beam of light on the specimen ( below stage clip * C and C)

Iris Diaphragm

controls the amount of illumination on the specimen. (Closing the iris
diaphragm can increase contrast when viewing a lightly specimen) Below condenser

Light source

turn on/off reflected light and transmitted light

Arm

supports upper parts of the microscope and is used as the handle for carrying

Base

the flat surface that is used to support the microscope during carrying