Methods and steps of using biological microscope

1. taking and placing

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

2. Place the microscope on the test bench, slightly to the left (the microscope is placed about 7cm from the edge of the test bench). Install the eyepiece and objective lens.

2. to light

3. Rotate the converter to align the low-power objective lens with the light-passing hole (the front end of the objective lens should be kept at a distance of 2cm from the stage).

4. Aim a larger aperture at the light hole. The left eye looks into the eyepiece (the right eye is open for simultaneous drawing later). Rotate the mirror so that the light is reflected into the lens barrel through the light passing hole. Through the eyepiece, you can see the white bright field of view.

3. observation

5. Place the slide specimen to be observed (which can also be made of thin paper with the word "6" printed) on the stage and press it with a pressing clip. The specimen should face the center of the light-passing hole.

6. Rotate the coarse quasi-focal spiral to slowly lower the lens barrel until the objective lens approaches the slide specimen (look at the objective lens to prevent the objective lens from touching the slide specimen).

7. The left eye looks into the eyepiece while rotating the coarse quasi-focal spiral in the opposite direction to slowly raise the lens barrel until the object is clearly seen. Then turn the fine quasi-focus spiral slightly to make the object image clearer.

8. Use of high-power objective lens: Before using high-power objective lens, you must first use low-power objective lens to find the observed image, and then turn the converter to change the high-power lens. After switching to a high magnification mirror, the brightness in the field of view becomes dark, so generally choose a larger aperture and use the concave surface of the mirror, and then adjust the fine focus spiral. The number of objects viewed becomes smaller, but the volume becomes larger.

4. finishing

8. After the experiment, wipe the appearance of the microscope clean. Turn the converter, deflect the two objective lenses to both sides, and slowly lower the lens barrel to the low position of zui, and place the reflector vertically. After zui, put the microscope into the mirror box and return it to its original place.