MAKE A MEME View Large Image Wehnelt cap.gif en A Wehnelt cap acting as a convergent electrostatic lens to focus the cloud of electrons produced by a filament 2011-12-02 own Lambtron Wehnelt cap svg cc-zero Electron guns focus
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Keywords: Wehnelt cap.gif en A Wehnelt cap acting as a convergent electrostatic lens to focus the cloud of electrons produced by a filament 2011-12-02 own Lambtron Wehnelt cap svg cc-zero Electron guns focus
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