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AT PRESENT, IT HAS BECOME ONE OF THE MOST POWERFUL ENTERPRISES IN CHINA
THE PRODUCTS NOT ONLY SELL WELL IN THE HOME COUNTRY, BUT ALSO SELL THE WORLD MAIN MAKET
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最新电影The procedures for using the microscope are: 1, take the mirror and put the right hand hold the mirror arm, and hold the mirror seat in the left hand. 2. Put the microscope on the experimental platform, slightly left. The eyepiece and the object mirror are installed. 2, light one rotation converter, so that the low magnification objective is aligned to the light hole. Secondly, a larger aperture is aligned to the light hole. The left eye gaze in the eyepiece and open the right eye, so as to facilitate future observation and drawing. Rotate the reflector to see the bright field.
A magnifying glass, used for simple visual observation optical device details of objects, is the ratio of the focal length lens eye distance much smaller. The size of an object in the retina of a human eye is proportional to the angle (angle of view) of the eye. The more the view is, the larger the image is, the more it can distinguish the details of the object. Moving near the object can increase the angle of view, but it is limited by the ability to focus on the eye. Use a magnifying glass to close to the eyes, and put an object within its focus, a positive image. The function of the magnifying glass is to enlarge the angle of view.
Far mirror is an important and indispensable tool for every outdoor enthusiast. But many of you don't have much knowledge about the performance of the telescope and how to choose the telescope. So the telescope doesn't have many uses or the effect is not satisfactory. Here, I'll show you how to select a telescope.