Microscope Notes

Eye Piece

Eye Piece Also called the Ocular The part of the microscope you look

through to see an image. The eye piece magnifies what you are

looking at 10 X’s

Eye Piece

Arm

Base

Arm and Base The arm and base are used to hold the

microscope. You should always use two hands one on

the arm and one under the base.

Eye Piece

Arm

Base

Coarse Adj.

Coarse Adjustment The coarse adjustment knob is used to

‘find’ an object. It is the first adjustment you use to focus on an object.

This may not make the image clear-- it only lets you see that there is something there.

Eye Piece

Arm

Base

Coarse Adj.Fine Adj.

Fine Adjustment The fine adjustment knob ‘fine tunes’ what

you are looking at. You use this knob after the coarse

adjustment to make the image more clear.

Eye Piece

Arm

Base

Coarse Adj.Fine Adj.

Objectives

Objectives The objectives are used to magnify what

you are looking at. There are 3 objectives

High power : 40X’s magnification Medium power: 10X’s magnification Low power: 4X’s magnification

Total Magnification To determine total magnification you must

multiply the eye piece by the objective.

Low Power 10 X 4 = 40X (total magnification) 10 X 10 = 10 X 40 =

Eye Piece

Arm

Base

Coarse Adj.Fine Adj.

ObjectivesStage

Stage This is where you put the object to be

viewed. We will use slides with object on them, so

the slide will be place on the stage with the object directly over the hole in the stage.

Eye Piece

Arm

Base

Coarse Adj.Fine Adj.

ObjectivesStageDiaphragm

Diaphragm Used to adjust the amount of light that

comes through the stage.

Eye Piece

Arm

Base

Coarse Adj.Fine Adj.

ObjectivesStage

DiaphragmLight Source

Eye Piece

Arm

Base

Coarse Adj.Fine Adj.

ObjectivesStage

Stage Clip

DiaphragmLight Source

Stage Clip Are used to hold the slide in place.