4.2 (a) To be familiar with and use the light microscope.

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Presentation transcript:

4.2 (a) To be familiar with and use the light microscope

Step 1 Switch on the light source and remove the eyepiece cover, if present.

Step 2 Rotate the nosepiece so that the low power objective lens is in use.

Step 3 Put a prepared slide above the hole in the stage. Secure with the clips.

Step 4 Using the coarse focus wheel, ensure that the low power objective lens is as close as possible to the slide.

Step 5 Adjust the iris diaphragm if the light is too bright.

Step 6 While looking through the eyepiece, use the coarse focus wheel to focus on the slide.

Step 7 Still looking through the eyepiece, use the fine focus wheel to sharpen the focus.

Step 8 Rotate the nosepiece to the next highest power objective lens.

Step 9 Re-focus using the fine focus wheel. Repeat steps 8 and 9 to view the slide under high power.

Results Draw labelled diagrams of your observations under low power and under high power.

END