How to use a microscope, how to use a microscope

1. Take the mirror and place it.

1 Hold the arm with your right hand and hold the base with your left hand.

2 Place the microscope on the bench, slightly to the left (the microscope is about 7 cm away from the edge of the bench.

place). Attach the eyepiece and objective.

Second, to the light. 3 Turn the converter so that the low-magnification objective is aligned with the clear hole (the front end of the objective lens should be kept at 2 centimeters from the stage.

meters).

4 Align a larger aperture at the aperture. The left eye is fixed inside the eyepiece (the right eye is open for later.)

Draw at the same time). Turn the mirror so that the light is reflected into the barrel through the aperture. Through the eyepiece, yes.

See the white vision.

3. Observation. 5 Place the slide specimen (which can also be made from a thin piece of paper with the word "6" printed on it) to be observed.

On the stage, press with a tablet clamp and make the specimen directly facing the center of the light hole.

6 Turn the coarse collimation spiral so that the lens barrel is slowly lowered until the objective lens is close to the slide specimen (eye.

Keep your eyes on the objective lens so that it doesn't touch the slide specimen).

7 Look the left eye into the eyepiece, and at the same time turn the coarse quasifocal spiral in the opposite direction so that the lens barrel slowly rises and straightens.

Until you can see the image clearly. Then turn the fine collimation spiral slightly to make the image of the object seen more clearly.

Precautions: After the experiment, wipe the surface of the microscope clean. Turn the converter to offset the two objectives to the sides and place the lenses.

The barrel slowly descends to the lowest point. Finally, put the microscope in the case and return it to its original place.

If the microscope is not equipped with a light source, the microscope can be placed on a stable table facing a wide window (if the light is not good, an incandescent lamp or fluorescent lamp can be used as the light source);

Turn the low-magnification objective directly below the tube so that it is about 1 cm away from the stage. Then raise the condenser to the highest height, put the aperture to the maximum, and then look through the eyepiece on one side, and rotate the reflector on the other hand, so that the light of the light source is reflected to the condenser as much as possible (if the microscope is equipped with a light source, this step can be omitted);

Take a drop of pond water on a clean glass slide, add a coverslip, and use absorbent paper to blot the water on the slide for microscope observation;

Place the slide on the microscope stage, place the sample to be seen directly below the low magnification, slowly lower the lens barrel so that the lens is about centimeters away from the slide, close the aperture, and lower the condenser so that the illumination is neither too strong nor too weak;

Observe with an eyepiece while moving the slide. At this time, the lens barrel can only go up, not down, otherwise it will crush the slide. When an image is observed and can move with the movement of the slide, it is the object to be observed. Microorganisms swimming in the water should be observable;

If you need to use a high-magnification lens, you only need to change the high-magnification objective to the bottom of the lens barrel and slightly rotate the fine adjustment knob to align the focal length.

You see the shot above has 4x, 10x. 40 times. 100 times is no, 4 times and 10 times are called low magnification lenses, 40 times are called high magnification lenses, and 100 times are called oil lenses.

First of all, you have to turn on the switch of the microscope, and then there is an aperture adjustment and brightness adjustment below, you put a slide and drop two drops of water on it, first use 4 times to see, rotate the large trochanter (called coarse adjustment) to be able to see the things of the slide, and then use the small rotor in the middle of the large rotor (called small adjustment), after being able to see the things on the slide clearly, then turn to 10 low, and so on to 40 times, but 100 times (oil mirror) must be dripped on the slide with pine cedar oil to see.

Microscope operation is an eight-step process.

1. Adjust the brightness: from dark to bright, you can use a large aperture and a concave mirror to adjust the angle of the reflector.

2. Fix the temporary loading in the appropriate position on the stage.

3. The low-magnification objective lens is aligned with the clear hole, and the lens barrel is adjusted from top to bottom using a coarse collimation spiral, so that the eyes can observe from the side to avoid the objective lens from touching the slide and damaging the lens and crushing the slide.

4. The left eye observes the changes in the visual field through the eyepiece, and at the same time adjusts the coarse quasifocal spiral to slowly move the lens barrel up until the visual field is clear.

5. If there is no object to be observed in the field of vision, you can move the film, the principle is to want to go up and down, and want to go left and right.

6. If it is not clear enough, it can be further adjusted with a fine collimation spiral.

7. If you need to observe under the high magnification objective, you can turn the converter to change the objective. If the visual field is dark, it can be adjusted by method 1; If it is not clear enough, it can be adjusted by 6 method, but not by 4 method.

8. After use, please adjust the converter so that the empty lens hole is facing the light hole, make the reflector stand upright, adjust the lens barrel to the lowest and pack it.