1. Microscope History

2. Anton van Leeuwenhoek Amateur scientist (drape maker by trade) Amateur scientist (drape maker by trade) 1676 sent letters to the Royal Society in London 1676 sent letters to the Royal Society in London Reported living animals in water (animalcules) Reported living animals in water (animalcules) Constructed first simple microscope Constructed first simple microscope

3. Microscopes Many types Many types Must have a lens and a light source Must have a lens and a light source An instrument that produces larger than life images, pictures, or video. An instrument that produces larger than life images, pictures, or video.

4. Simple Microscope Uses only one lens and a natural light source. Uses only one lens and a natural light source. Lens- a curved piece of glass, bends light as it pass through. Water will do the same. Lens- a curved piece of glass, bends light as it pass through. Water will do the same.

5. Compound Light Microscope Used in our class Used in our class Uses more than one lens Uses more than one lens Electric light source Electric light source Uses light to make objects appear larger. Uses light to make objects appear larger.

6. Electron Microscope Very powerful Very powerful Uses beams of electrons Uses beams of electrons Magnifies by a million times Magnifies by a million times Found in hospitals and universities. Found in hospitals and universities.

7. Robert Hooke Worked with microscopes about 100 years later Worked with microscopes about 100 years later Designed first compound microscope that was adjustable for focus. Designed first compound microscope that was adjustable for focus.