1. Microscopes

3. Development of the microscope
Anton van Leeuwenhoek
Father of Microbiology
Made his own lenses (some as powerful as the microscopes we use in class)

4. Microscopes Type of microscope Focuses what Through /Surface
Magnifies up to
Live organisms?

5. Compound light microscope
Focuses light
Uses combination of lenses
Shines light through objects
Magnifies up to 1000 times (ours are 400x)
Can view live organisms

6. http://www. bioweb. uncc

7. Dissecting microscope
Focuses light
See surface of objects
Magnifies up to 40 times
Can view live organisms
Uses combination of lenses
wappingersschools.org/.../visualvocab/page4.html

8. http://www. keweenawalgae. mtu

9. Electron microscope Two types: Transmission electron microscope (TEM)
Scanning electron microscope (SEM)

10. Transmission electron microscope
Focuses electrons
Sees through objects
Magnifies up to 100,000 times
Can view only dead or inanimate objects

11. Transmission electron microscope
Mammalian mitochondrion
biology.unm.edu/.../Summaries/Cell.html

12. Scanning electron microscope
Uses electrons
View surface of objects
Magnifies up to 10,000 times
Views only dead or inanimate objects

13. Scanning electron microscope
Bee eye

14. Transmission electron microscope
Viruses budding
from a cell
Transmission electron microscope
Scanning electron miscroscope
www.
aecom.yu.edu/aif/gallery/sem/sem.htm

15. Ion microscope Uses positively charged ions surface
Magnifies up to at least 1,000,000 times
Cannot view live organisms

16. through ion microscope
tungsten atoms
through ion microscope

18. Question # 11 & 12