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Samples may be made to release electrions, which must be further accelerated by a ||Electron Gun]] or a [[Linear Accelerator]] prior to entering the Objective Lens (if prsent), by means of Heat, Ion Bombardment, Electron Bombardment, or Light Bombardment (such as high energy UV Light).
Samples may be made to release electrions, which must be further accelerated by a ||Electron Gun]] or a [[Linear Accelerator]] prior to entering the Objective Lens (if prsent), by means of Heat, Ion Bombardment, Electron Bombardment, or Light Bombardment (such as high energy UV Light).
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== List of Electron Microscope Manufacturers ==
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=== Historic ===
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* [[Siemens]]
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* [[AEI]]
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* [[Philipse]]
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* [[Tesla]]
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* [[ETEC]]
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=== Current ===
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* [[FEI]]
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* [[Hitachi]]
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* [[JEOL]]
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* [[Tescan]]
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* [[Carl Zeiss]]