1. Microscopes Microscope Parts Quiz on Friday!!
Will need to label parts on diagram and complete matching/mult. choice on the function of the parts.

2. Microscopes This week’s objectives:
To name the parts of the microscope and describe their functions
To describe how to properly use a compound microscope.
To compare a compound light microscope to a dissecting microscope and electron microscopes.

3. Label the parts on your microscope picture.
Eyepiece magnification
= 10X

4. Label the parts on your microscope picture.
Eyepiece magnification = 10X
Arm-Support-proper place to pick up/carry

5. Label the parts on your microscope picture.
Eyepiece/ocular lens magnification = 10X
Arm-Support
Stage – slide is placed here for viewing

6. Label the parts on your microscope picture.
Eyepiece/ocular lens magnification = 10X
Arm-Support
Stage - support
Coarse adjust – general focus. Use ONLY on Scanning power.

7. Label the parts on your microscope picture.
Eyepiece/ocular lens magnification = 10X
Arm-Support
Stage - support
Coarse adjust – general focus
Fine Focus – use for high power focus

8. Label the parts on your microscope picture.
Eyepiece/ocular lens magnification = 10X
Arm-Support
Stage - support
Coarse adjust – general focus
Fine Focus – high power focus
Base – support-place other hand here when carrying.

9. Label the parts on your microscope picture.
Eyepiece/ocular lens magnification = 10X
Arm-Support
Stage - support
Coarse adjust – general focus
Fine Focus – high power focus
Light source
Has a dimmer switch to adjust the amount of light
Base - support

10. Label the parts on your microscope picture.
Eyepiece/ocular lens magnification = 10X
Arm-Support
Stage - support
Coarse adjust – general focus
Diaphragm – also adjusts amount of light-works like the pupil of your eye.
Fine Focus – high power focus
Light source
Base - support

11. Label the parts on your microscope picture.
Eyepiece/ocular lens magnification = 10X
Arm-Support
Stage - support
Stage clips – holds slide
Coarse adjust – general focus
Diaphragm – adjusts amount of light
Fine Focus – high power focus
Light source
Base - support

12. Label the parts on your microscope picture.
Eyepiece/ocular lens magnification = 10X
Arm-Support
Objective Lenses
Scanning = 4X (shortest)
Low Power = 10X (med. length
High power = 40X (longest)
Stage - support
Stage clips – holds slide
Coarse adjust – general focus
Diaphragm – adjusts amount of light
Fine Focus – high power focus
Light source
Base - support

13. Label the parts on your microscope picture.
Eyepiece/ocular lens magnification = 10X
Revolving nosepiece
Arm-Support
Objective Lenses Scanning = 4X (shortest)
Low Power = 10X (med)
High power = 40X (longest)
Stage - support
Stage clips – holds slide
Coarse adjust – general focus
Diaphragm – adjusts amount of light
Fine Focus – high power focus
Light source
Base - support

14. Label the parts on your microscope picture.
Eyepiece/ocular lens magnification = 10X
Tube
Revolving nosepiece
Arm-Support
Objective Lenses Scanning = 4X (shortest)
Low Power = 10X (med)
High power = 40X (longest)
Stage - support
Stage clips – holds slide
Coarse adjust – general focus
Diaphragm – adjusts amount of light
Fine Focus – high power focus
Light source
Base - support

15. Magnification of a Compound Microscope
Because you are looking through multiple lenses the lenses have a “compounding” effect.
The eyepiece always magnifies 10X
Eyepiece
Objective Lens
Magnification
Scanning lens (red)
10X
Low Power (yellow)
High Power (blue)

16. Magnification of a Compound Microscope
Each of the objective lenses have their own magnification
Eyepiece
Objective Lens
Magnification
Scanning lens (red)
10X 4X
Low Power (yellow)
High Power (blue)
  40X

17. Magnification of a Compound Microscope
You then multiply the eyepiece with the objective lens to determine the total magnification
Eyepiece
Objective Lens
Magnification
Scanning lens (red)
10X 4X
Low Power (yellow)
100X
High Power (blue)
40X
400X
40X

18. General Procedures
Always carry the microscope with one hand on the Arm and one hand on the Base.  
Wear your glasses, the microscope will focus to your eyesight!
 Keep both eyes open, your brain will learn to ignore the other eye.
Never use the coarse adjustment after you turn past scanning (4X) power.

19. Focusing a Specimen Always start on scanning power.
Bring the stage all the way up and focus the specimen using the course adjust.
Re-center so what you want to focus is at the pointer!
Turn to high power only after re-centering
Use the FINE FOCUS ONLY for low and highest power. NEVER use the course adjustment after you turn past scanning power.

20. Making good drawings 100X nucleus Cheek cell
Don’t even think of starting your drawing unless you have a pencil (colored are even better) drawings in pen are unacceptable. This is for two reasons:         (a) You can erase pencil!         (b) You can shade in areas more easily in pencil
Take time to add detail to your drawing. Use your pencil to shade and give your drawing some detail and depth. Use colored pencil when appropriate to add color.
In the upper left hand corner of each circle include the specimen name as written on the slide label. In the upper right hand corner, include the magnification (100x or 430x).
Label Everything you identify!
100X
Cheek cell
nucleus
Cell membrane

21. Making a Wet Mount Slide
1. Gather a very thin slice/piece of whatever your specimen is. All samples should be paper thickness or thinner!
2. Place ONE drop of water directly over the specimen. The drop should be about ½ the size of a dime.
3. Place the cover slip at a 45 degree angle with one edge touching the water drop, and let the cover slip drop onto the drop of water.
Do not push down on the cover slip.
Try to avoid bubbles!

22. Microscopes Microscope Parts Magnification of Lenses
Label with structure and function
Magnification of Lenses
Eyepiece
Objective Lens
Magnification
Scanning lens (red)
10X
Low Power (yellow)
High Power (blue)