bio microscopes

The lens you look through that magnifies the image (10x)

Ocular (eyepiece)

Connects the base to the head, supports the upper components, and provides a handle for carrying the instrument

Arm

Holds the microscope slide in place on the stage

Stageclips

Rapid focus- used under scanning

Coarse wheel adjustment (knob)

Fine focus used under low and high power

Fine wheel adjustment (knob)

Provides structural stability, supports the microscopes weight, and often contains the light source.

Base

Illuminates the specimen

Light source

Regulates the amount of light that reaches the specimen

Diaphragm

The flat platforms that supports the slides

Stage

The opening in the stage where light passes through to the specimen

Aperture

Mounted on the nosepiece and has lenses with different magnifications that focus on the specimens: scan (4X), low (10X) and high (40X)

Objectives

Holds the objectives and allows you to switch between them easily

Revolving nosepiece

How many hands do you have to carry the microscope with and where do you put them?

Two hands; one on the arm and one on the base

What do you do after taking the cover off?

Make sure the stage is down and objective is on scan (4x-red)

What do you do after plugging in the microcope?

Turn on the lamp

What do you place on the stage and what do you use to focus?

You place the slide on the stage and use the course adjustment to focus

After switching the objective to low (10x-yellow), what do you use to focus?

You use the fine wheel adjustment to focus

After switching the objective to high (40x-blue), what do you use to focus and what should you do?

You use the fine wheel adjustment to focus and BE CAREFUL

What do you do when finished with the microscope?

Remove slide, lower stage, turn objective to scan, wrap cord around base, put cover on, and return microscope to cabinet

How do you calculate total magnification?

By multiplying the ocular lens and objective lens