FTP, name this device that obtains images using a beam of electrons.
The first commercial version of this was the Cambridge Scientific Instruments Mark I.  An environmental version of this apparatus uses the principle of induction for operation.  Common components include an Everhart-Thornley detector and a lithium-doped silicon energy dispersive spectrometer.  Examination of non-conductive samples requires sputtering of carbon or gold, because charging causes image degradation.  FTP, name this device that obtains images using a beam of electrons.
The first commercial version of this was the Cambridge Scientific Instruments Mark I.  
Scanning Electron Microscope