1. The Light Compound Microscope
Goal: Students will know the parts of a microscope and how to properly use it

2. How many did you get correct? COARSE-ADJUSTMENT KNOB
Eyepiece
COARSE-ADJUSTMENT KNOB
BODY TUBE
NOSEPIECE
FINE-ADJUSTMENT KNOB
HIGH-POWER OBJECTIVE
ARM
LOW-POWER OBJECTIVE
STAGE
STAGE CLIPS
DIAPHRAGM
BASE
LIGHT SOURCE

3. Parts of the Microscope
1. Eyepiece, magnifies the image 10x
2. low-power objective, magnifies the image 4x
3. medium-power objective, magnifies the image 10x
4. high-power objective, magnifies the image 40x
eyepiece x objective = total magnification

4. 5. Nosepiece turns to change objectives
6. Body tube keeps eyepiece and objectives at correct distances
7. coarse-adjustment knob, focuses image rapidly (good for low power)
8. fine-adjustment knob, focuses image slowly (good for high power)

5. Stage holds slide.
Stage clips, keep slide from moving
11. Diaphragm, allows light to enter stage
12. Light provides light
13. Arm, supports body tube.
14. Base, supports the microscope.

6. How to use the microscope:
Always begin on low power.
Use the coarse adjustment knob (big knob) to find specimen.
Use the fine focus knob to focus.
Switch to medium or high power only AFTER successfully finding specimen on low power
NEVER use the coarse adjustment on high power
EVER!

7. clean-up: Turn light off. Change objective to low power.
move the stage to its lowest position.
Remove any specimens or slide from stage.