The usage method of a microscope

First, place it. Hold the arm of the mirror with your right hand and support the base with your left hand to keep the mirror body upright. The desktop should be clean and stable. Choose a place by the window or with sufficient light. Single-tube ones are generally placed on the left side, 3 to 4 centimeters away from the edge of the table.

Check if there is any problem with the microscope and whether it is clean. The mechanical parts of the microscope body can be wiped with a clean soft cloth. Raise the tube to a position 1 to 2 centimeters away from the stage, and align the low-power lens with the light passage hole. Adjust the aperture and the mirror. Use a plane mirror when the light is strong and a concave mirror when it is weak. The mirror should be turned with both hands. Place the slide on the stage, making sure the side with the cover slip is always facing upwards. The spring clip fixes the slide.

When focusing, first rotate the coarse focusing knob to slowly lower the tube and observe carefully from the side until the objective lens is close to the slide specimen. If a monocular microscope is used, keep both eyes naturally open. Observe the specimen with the left eye and record and draw with the right eye. At the same time, adjust the focal length with the left hand to make the image clear and move the field of view of the specimen. Record the drawing with the right hand. The microscope is one of the great inventions of mankind. Before its invention, human beings' concept of the surrounding world was limited to what they could see with the naked eye or with the help of a handheld lens.

The microscope has revealed a brand-new world to the human field of vision. At one time, people have seen hundreds of "new" tiny animals and plants, as well as the internal structures of various things from the human body to plant fibers. Microscopes also help scientists discover new species and assist doctors in treating diseases.