What is an electron microscope's general magnification?
The magnification of a microscope refers to the product of the magnification of the eyepiece and the objective lens, which magnifies the length or width of the object image. For example, if the magnification of the eyepiece is 10 times and the magnification of the objective lens is 40 times, the magnification of the microscope is ═ 10 × 40 ═ 400 times
There are two concepts of total magnification: optical magnification and digital magnification (which is only involved when connecting imaging devices).
1. Optical magnification refers to the magnification of an object observed through the eyepiece of a microscope. The calculation method for optical magnification is relatively simple, which is the objective magnification multiplied by the eyepiece magnification.
For example, when calculating the magnification of a stereomicroscope, the objective of a continuous zoom stereomicroscope is usually 0.7-4.5 times. With a 10x eyepiece, the total magnification of this microscope is 7-45 times.
The calculation of biological microscopes and metallographic microscopes is simpler. The general objective lens configuration is 4x, 10x, 40x, 100x. The conventional eyepiece configuration is 10x, and there are also 16x, 20x, etc. As long as the magnification of the eyepiece and objective lens is multiplied separately, the total magnification can be obtained.
2 digital magnification factors
Digital magnification refers to the magnification factor displayed on an image after an external device is connected. Currently, the most common method on the market is to use a three eye microscope, which is connected to a computer, monitor, or television through a CCD device for imaging observation, in order to reduce eye fatigue and facilitate sharing with others.
