Name: Widiyana Daniasya (28)Class: VII-A

Microscope

1. Eyepiece (ocular lens): Magnifies the already magnified image coming from the objective2. Body tube (eyepiece tube): Connecting the ocular lens and the objective lens.3. Revolver (nosepiece objective turret): To choose objective lens which is going to be used.4. Objective lens: To make shadow from the object and enlarge the observed image.5. Arm (frame on the picture): To hold the microscope when it is removed.6. Stage: The flat platform where you place your slides. Stage clips hold the slides in place. If your

microscope has a mechanical stage, you will be able to move the slide around by turning two knobs. One moves it left and right, the other moves it up and down.

7. Diaphragm: This iris diaphragm of a microscope contains the amount of light that can enter through to the specimen. If the condenser iris diaphragm is open, the image will be bright; if it is closed, it will be dim.

8. Condenser: Additional lens to control light intensity.9. Coarse Adjustment/Focus: Focusing an object’s shadowrapidy, so that microscope tube can go

down and up faster.10. Fine focus: Focusing an object’s shadowrapidy, so microscope tube can go down and up slowly.11. Base: The bottom of the microscop, to preserve a microscope still standing in a flat table.12. Mirror (Illumination system in the picture): to direct a light, until we can see the object.

How to Use the Microscope

1. When moving the microscope, always carry it with both hands. Grasp the arm with one hand, and place the other hand under the base for support.

2. Turn the revolving nosepiece so that the lowest power objective lens is "clicked" into position.3. The microscope slide should be prepared with a coverslip or cover glass over the specimen. This

will help protect the objective lenses if they touch the slide. Place the microscope slide on the stage and fasten it with the stage clips. You can push down on the back end of the stage clip to open it.

4. Look at the objective lens and the stage from the side and turn the coarse focus knob so that the objective lens moves downward (or the stage, if it moves, goes upward). Move it as far as it will go without touching the slide.

5. Now, look through the eyepiece and adjust the illuminator (or mirror) and diaphragm for the greatest amount of light.