1. Discovering Cells

2. Robert Hooke 1665
Robert Hooke is the first person to publish a scientific study on the microscopic world
He built a compound light microscope
Sorry I can’t show you an image of the man. Newton hated him and had all his portraits destroyed
Page 8 of your books

3. To the left you see Wren’s illustrations from Hooke’s Micrographia

4. Robert Hooke uses the term cell for the first time to describe the small compartments he sees in a slice of cork.
In the year 1665 A.D.

5. How Light microscopes work
Convex lens are used to bend and focus light
The distance needed to focus a lens is called its focal length
Page 11 in your books

6. Look on page 12

7. Animalcules by Leeuwenhoek

8. Cell Theory 1855 All living things are made up of cells.
All cells come from other cells.
All cells are similar

9. Today we have Electron Microscopes
These are much more expensive but they can give you much better images