1, Microscope magnification calculation: the magnification of the microscope is usually obtained by multiplying the multiple of the objective lens and the eyepiece. The objective lens is a lens placed above the object, which generally has multiple options such as 4X, 10X, 40X, etc. The eyepiece is an observation lens located at the eye, which is generally fixed at 10X. So, the total magnification is equal to the objective multiple times the eyepiece multiple. For example, if the objective lens is 40X and the eyepiece is 10X, the total magnification is 40×10=400 times.
2, The magnification of the telescope: the magnification of the telescope is calculated by the focal length ratio of the eyepiece and the objective lens. The focal length of a telescope is the distance between the objective lens and the eyepiece. Magnification is equal to the focal length of the telescope divided by the focal length of the eyepiece. For example, if the focal length of the telescope is 1000 mm and the focal length of the eyepiece is 10 mm, the magnification is 1000/10 = 100 times.
3, The magnification of the magnifying glass: the magnification of the magnifying glass is determined by the focal length of the lens. The focal length of a magnifying glass is the distance between the lens of the magnifying glass and the object being observed. The magnification is equal to the ratio of the focal length of the object to the magnifying glass plus 1. For example, if the focal length of a magnifying glass is 20 cm, the magnification is 20 the distance between the object being observed and the magnifying glass + 1.
Microscope use precautions
1, The microscope is a precision instrument, the use of must be in accordance with the operating procedures, to be careful and patient, do not rush, action is too strong, in order to prevent misoperation and damage to the components.
2, Do not touch the optical glass part with your hand, while preventing violent collision and damage to the components.
3, When observing, be sure to cover the slide, do not let the water on the slide to the moving table, do not let the acid, alkali and other chemicals contact the microscope, do not let the microscope exposed to the sun.
4, The use of fine focus knob, if it can not continue to rotate in the same direction, can not be quite twist, should be reversed in the opposite direction, and turn the coarse focus knob, and then use the fine focus knob for fine adjustment.
