What is the magnification of an electron microscope in general?
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 objective image. For example, if the magnification of the eyepiece is 10 times, the magnification of the objective lens is 40 times, and the magnification of the microscope is 10 x 40 x 400 times
There are two concepts of total magnification, one is optical magnification, and the other is digital magnification (digital magnification is only involved when connecting imaging equipment).
1. Optical magnification refers to the magnification at which we observe an object in the eyepiece of a microscope. The calculation method for optical magnification is relatively simple, which is the objective lens multiple multiplied by the eyepiece multiple.
For example, when calculating the magnification of a stereo microscope, the objective of a continuously variable magnification stereo microscope is usually 0.7-4.5 times. In the case of 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 configuration is 4x, 10x, 40x, 100x, while the conventional eyepiece configuration is 10x. In addition, there are 16x, 20x, etc. The total magnification can be obtained by multiplying the magnification of the eyepiece and objective separately.
2 digital magnification
Digital amplification refers to the magnification of an image displayed on an external device. Currently, a common method on the market is to use a three lens 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.
