1. Light Microscopes
2.02: Investigate and describe the structure and function of cellular organelles

2. The Light Microscope
Total Power Magnification: Eyepiece power multiplied by the Objective power.
Usually there are 3 objective powers:
Low: 4x magnification
Medium: 10x magnification
High: 40x magnification

3. Calculating Total Magnification
If the eyepiece power is 10x….
At a low magnification of 4x, multiply these two numbers together to get a total magnification of 40x.
At a medium magnification of 10x, you would get a total magnification of 100x.
And at a high magnification of 40x, you would get a total magnification of 400x!

4. Parts of a Microscope Eye Piece Arm Nosepiece Objective Lenses Stage
Stage Clips
Diaphragm

5. Parts of a Microscope Coarse Adjustment Knob Fine Adjustment Knob
Light Source
Base

6. Microscope Invention
Leeuwenhoek: (1600’s) Invented the first simple microscope to look at bacteria.
Hooke: Used a compound microscope to look at cork and saw CELLS!!