1. Bell Work Write down the following terms on a blank sheet of paper.
Microscope
Resolution
Magnification
Optics
Lens
Write down what you think the definition of each of those words is.

2. Parts and their Functions
Microscopes
Parts and their Functions

3. Microscope
Instrument using lenses to help us see small objects more clearly

4. Resolution How clearly an object can be seen
The higher the resolution the sharper the image will appear

5. Magnification
Enlarging the image of an object

6. Total Magnification
The number of times the image you are seeing has been enlarged from the original object
Total Magnification = Eyepiece X Objective

7. Optics The lens must be rounded outward (convex)
The lens must be a solid
The lens magnifies because the light rays enter a small surface, but leave through a larger surface (refraction)
The farther the light rays travel the greater the magnification will be

8. Original Object
Enlarged Object
Lens
Light Rays

9. Eyepiece Contains a lens with a magnification of 10x
The piece you look through

10. Low Power Objective Lens located on the nosepiece.
Magnifies the object 10 times

11. Stage
Large flat piece that the slide rests on

12. Coarse adjustment Larger knob on the side of the arm
Focuses the scanning objective lens by moving the stage up and down

13. Fine Adjustment Smaller knob on the side of the arm
Focuses the low and high power objectives by moving the stage a tiny bit up and down

14. Light Shines upward through the diaphragm and slide
Located on the base of the microscope

15. Diaphragm Wheel located under the stage
Regulates the amount of light that passes through the stage to the slide

16. High power objective Strongest objective lens located on the nosepiece
Magnifies the object 40 times

17. Scanning Objective lens
The lowest power objective lens located on the nosepiece
Magnifies the object 4 times

19. Original Object
Enlarged Object
Lens
Light Rays