Focusing/defocusing Action in Electron Microscopes
- Practical Electron Microscopy and Database -
- An Online Book -

http://www.globalsino.com/EM/  



 
This book (Practical Electron Microscopy and Database) is a reference for TEM and SEM students, operators, engineers, technicians, managers, and researchers.
 

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The focus (sometimes called defocus) in electron microscopes is a free parameter and can be adjusted by changing the objective lens excitation (lens strength).

 

 

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