1. Coarse Focus Fine Focus Arm Stage Clips Pivot Point Base Body Tube
Eye Piece (ocular)
Coarse Focus
Body Tube
Fine Focus
Revolving Nose Piece
Arm
Low Power Objective
Stage Clips
High Power Objective
Stage
Pivot Point
Diaphragm
Base
Mirror

2. 1) Eye Piece (ocular) – 2) Body Tube – the lens that you look through
the tube that supports the eyepiece

3. 3) Revolving Nosepiece-
the rotating device that holds and changes the objectives (lenses).
Revolving
Aperature-
Opening in the stabe to allow light from mirror or light to pass

4. 5) High Power Objective –
4) Low Power Objective –
magnification lens with the lowest power
5) High Power Objective –
magnification lens with the highest power
6) Stage Clips –
clips that keep the slide or specimen from moving
on the stage

5. 7) Stage –
holds the specimen

6. 8) Diaphragm-
controls the amount of light entering through the aperature to the objectivefrom the bottom

7. 9) Pivot Point- 10) Base- 11) Mirror
part that allows you to tip the ocular toward you
Pivot Point
Base
Mirror
10) Base-
supports the microscope
11) Mirror
reflects (bends) the light upward onto the slide

8. 12) Fine Focus Adjustment –
moves the body tube in small increments
13) Coarse Focus Adjustment-
moves the body tube in large increments
14) Arm –
attaches the eyepiece and the body tube to the base

9. Magnification
A how to guide...

10. Calculate Total Magnification
ocular power x objective lens power using
Ocular power is generally 10X, meaning it has a magnification or power of 10X

11. MULTIPLY

12. Magnification
Elodea
40 x
Elodea
100x
Elodea
400x

13. The end

14. STOP:
TEACHER NOTES & ADDITIONAL PICS

16.
Microscopes/selftest.htm