cassini 300X 사용 설명서 - 페이지 4

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Helpful Hints

1) The most important parts of your microscope are the lenses. Handle

them with care. If the lenses are dirty or dusty you can clean them

with a soft cotton cloth or a special lens cleaning tissue. Do not wipe

them with a finger or a regular facial tissue.

2) Protect your microscope from dust and moisture by always storing it in

its case.

Getting Started

1) First, turn the microscope over. Insert two AA alkaline batteries in the

base of the microscope. In order to remove the bottom cover of the

microscope you will need a Phillips head (+) screwdriver. Insert the

batteries as shown, making sure that the (+) and (-) terminals are

properly identified. Replace the bottom cover and reinsert the screw.

Do not overtighten.

Place the microscope on a flat surface near a bright light, or in the

daytime, a window. Locate the mirror and adjust the angle so that

when you look into the eyepiece you see a bright circle of light. Do

not point the mirror toward the sun as eye damage may result. If

there is no bright light available or, if the room lighting is poor, you can

use the microscope's electric illuminator. To turn on the illuminator,

flip the mirror over so that the light bulb is aimed upward. The light will

come on by itself. Look through the eyepiece and adjust the angle of

the light until you see a bright circle.

3) Once you can see a bright light circle in the eyepiece your microscope

is ready for use.

4) Choose one of the prepared sample slides from your set. Place it

under the two spring clips on top of the stage.

5) Next, choose the magnifying power you want to use. Your microscope

can provide magnifying powers of 300X, 600X, and 1,200X.

Remember that the longer objective lenses provide the higher powers.

Most observing is done at low power.

6) To change the magnifying strength turn the revolving lens turret until

you hear a click.

7) Turn the focusing knob until the objective lens is almost touching the

slide. Don't let the lens touch the slide as you may break the slide and

damage the lens. Now look through the eyepiece and slowly turn the

focusing knob back until you see the sample clearly.

How to Make a Prepared Slide

Samples for examination should be very thin so that light can pass

through them. If the sample is too thick it will appear dark in the

microscope.

Cloth fibers, pollen, dust, or salt crystals will be easy to see and make

good samples for beginners to observe.

If the sample is very thin and clear a drop of dye may make details show

more clearly. Methylene blue dye can be obtained from an aquarium