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Essay

Electron Microscope

Essay specific features

 

Issue:

Technology

 

Written by:

Shawn R

 

Date added:

December 5, 2016

 

Level:

University

 

Grade:

A

 

No of pages / words:

1 / 251

 

Was viewed:

894 times

 

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Essay content:

They create electric and electromagnetic fields to both concentrate and move the beam. The electron microscope requires that the electron beam be in a vacuum, because electrons cannot travel far in air 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 survive in a vacuum...
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Living specimens cannot be examined with an electron microscope, since they will not survive in a vacuum. The magnification in magnetic electron microscopes is determined by the strength of the current passing through the electric and electromagnetic lens coils. Changing the current through the objective lens coil focuses the image...
displayed 300 characters

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