Electron Microscope The negatron microscope, instrument that produced the first magnified introduce showing three-dimensional and highly magnified image of a small object. It directs a beam of negatrons rather than light with a specimen. The beam of electrons is created from an electron gun. This beam then travels by doer of the length of the microscope cylinder, which contains the lenses, the specimen chamber, and the image-recording system. Two types of electron lenses are used, electrostatic and electro magnetised. They create electric and electromagnetic fields to both patsy on and move the beam.
The electron microscope requires that the electron beam be in a vacuum, because electrons cannot travel far in stemma at atmospheric pressure. Pumps empty the column and specimen chamber of the electron microscope. Living specimens cannot be examined with an electron microscope, since they will not subsist in a vacuum. The magnification in magnetic electron microscopes is dete...If you want to get a full essay, recount it on our website:
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