Caption: Animation of the inside of a transmission electron microscope (TEM), showing how it produces an image. An electron gun at the top of the column produces a beam of fast-moving electrons. These are focused by magnetic lenses , which deflect the negatively-charged electrons. A sample is introduced into the beam, absorbing and interacting with some electrons, and the remainder are focused onto a screen at the bottom. The image from this screen can be displayed on a computer. Electrons are able to image far smaller structures than visible light, as the wavelength of an electron, as described by wave-particle duality, is far smaller than that of visible light.

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How an electron microscope works

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Duration: 00:00:24.01

Frame size: 1920x1080

Frame rate: 25

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Format: QuickTime, Photo JPEG 100%, progressive scan, square pixels

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