Noun
the electrode that is the source of electrons in a cathode-ray tube or electron microscope; consists of a cathode that emits a stream of electrons and the electrostatic or electromagnetic apparatus that focuses it
Source: WordNetIn a monochrome receiver the luminance signal is amplified to drive the control grid in the electron gun of the CRT. Source: Internet
In some systems this was accomplished using a second electron gun inside the CRT that could write to one location while the other was reading the next. Source: Internet
It differs from a normal CRT in that the electron gun within does not produce a focused controllable beam. Source: Internet
Provided the electron gun can generate a beam with sufficiently small diameter, an SEM could in principle work entirely without condenser or objective lenses, although it might not be very versatile or achieve very high resolution. Source: Internet
When the main electron gun writes an image to the screen, the energy in the main beam is sufficient to create a 'potential relief' on the storage mesh. Source: Internet