What is the general magnification of an electron microscope
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 times × 40 ¥ 400 times
There are two concepts of total magnification, one is optical magnification, and the other is digital magnification (which is only involved when connecting imaging devices).
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 objective lens magnification * eyepiece magnification.
For example, when calculating the magnification of a stereoscopic microscope, the objective of a continuously variable magnification stereoscopic microscope is usually 0.7-4.5 times. However, with a 10x eyepiece, the total magnification of this microscope is 7-45 times.
The calculation of biological microscopes and metallographic microscopes is simpler. Generally, the objective configuration is 4x, 10x, 40x, 100x, while the conventional configuration of the eyepiece is 10x. Additionally, 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, in the market, a three eye microscope is commonly used to connect a CCD device to a computer, monitor, or television for imaging observation, in order to reduce eye fatigue and facilitate sharing with others.
