1. Compound Light Microscope
Uses two lenses and has a light source
Ocular lens usually magnifies 10x
Can be used to view living cells
Highest magnification of a compound light microscope is 2,000x

3. Electron Microscope
Beam of electrons produce an enlarged image of specimen
Highest magnification of an electron microscope is 200,000x
Cannot be used to view living cells

4. Scanning Electron Microscope
Electron beam is focused on a specimen coated with a very thin layer of metal
Electrons that bounce off form an image on a fluorescent screen
Show 3-D images of cell surfaces
Black and white images only (artificial colors sometimes added)

6. Transmission Electron Microscope
An electron beam is directed at a very thin slice of a specimen stained with metal ions
Electrons passing through the specimen strike a fluorescent screen, forming an image
The formed image can show the internal structure of a cell in fine detail
Black and white images only (artificial colors sometimes added)

8. Stage
Light Source
Ocular Lens
Objective Lens 10x
Objective Lens 4x
Objective Lens 40x
Course Adjustment
Fine Adjustment
Stage Clips
Base
Body Tube
Arm
Nosepiece
Diaphragm/Condenser

9. Answers Body Tube 12. Coarse Adjustment Nosepiece 13. Fine Adjustment
Objective lens 4x Base
Objective lens 10x
Objective lens 40x
Stage Clips
Diaphragm / Condenser
Light Source
Eyepiece
Arm
Stage

10. Magnification
- increase of an objects apparent size.
Resolution
- power to show details correctly
Contrast
- the ability to distinguish different densities of structures
Wet Mount
- a glass slide holding a specimen suspended in a drop of liquid