electron gun
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electron gun Definition
(n)
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
electron gun Synonyms
electron gun
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