1. MICROSCOPE

2. Human naked eyes cannot observe objects with size smaller than 0.1 mm

3. Microscope is a tool that is used to observed microscopic objects that cannot be seen with the naked eyes.

4. Microscope Parts Mirror Objective lens Hole Diaphragm Eyepiece BodyBody tube tube Bodytube Revolver Croase Focus Focus Stage Clips Stage Clips Base Arm Fine Focus Fine Focus

5. Parts of Microscope and their function Eyepiece : to magnificate image you look through.

6. Parts of Microscope and their function Coarse focus : focuses the image under low power

7. Parts of Microscope and their function Body tube : connect the eyepiece to the revolving nose piece

8. Parts of Microscope and their function Fine focus : sharpens the image under high and low magnification

9. Parts of Microscope and their function Revolver : holds and turns the objectives into viewing position

10. Parts of Microscope and their function Low-power objective Lens : contains the lens with lower power magnification

11. Parts of Microscope and their function High-power objective Lens : contains the lens with high (the most) magnification.

12. Parts of Microscope and their function Arm : support the body tube.

13. Parts of Microscope and their function Stage : platform used to support the microscope slide

14. Parts of Microscope and their function Stage clips : hold the microscope slide in place

15. Parts of Microscope and their function Diaphragm : regulates the amount of light entering the body tube

16. Parts of Microscope and their function Mirror : allows light to go upward through the diaphragm, the specimen, and the lenses

17. Parts of Microscope and their function Base : provides support for the microscope

18. How to figure out the Magnification? Low Power 10 X 10 X 100 X Eyepiece Objective Lens Magnification High Power 10 X 45 X 450 X

19. Working with your microscope ! 1. Place the microscope on flat surface. The arm should be toward you. 2. Look through the eyepiece. Open the diaphragm. 3. Adjust the mirror until you can see the most light coming through the tube. Seven easy steps for beginners !

20. 4. Place the slide so that the material to be observed is in the middle of the hole on the stage. 5. Turn the nosepiece to the low- or medium- power objective- never start to the high-power. 6. Turn the coarse focus until the objective goes as far as it can without touching the slide. 7. Finally, look through the eyepiece and sharpens the image by turning the fine focus.

21. Attentions !! 1.Always carry the microscope by holding the arm with one hand and supporting the base with the other hand. 2. Do not touch the lenses with your finger. 3. Always focus first with lower-power objective. 4. Do not use coarse focus when the high power objective is in place.

22. Once you have examined the specimen under low power, try this: fiddle with the mirror. Sometimes you can change the light and see the specimen in a different way.  as you look through the eyepiece, try moving the slide to see different parts of the specimen. This takes practice.  try a high-power objective, but expect the light to be dimmer. You will probably have to change the focus a bit.

23. Position of Object Glass and Cover Glass

24. Student Activity: Observing Pond Water

25. Have you ever thought that life exists in a very small drop of water?  You will not be able to observe it with your naked eyes.  Therefore, you need to conduct an observation under a microscope

26. Microscope Object glass Cover glass Pipette Pond Water Chemical glass 100 ml What do you need?

27. What should you do? SSelect a water environment (river, gutter, well, etc), in your school area and take samples of water. Observe what is inside the water by taking a drop of water OOOObserve and draw the organism seen under the microscope HHHHow many kinds of organisms can you observe?

28. Observation Result