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Electron tube
Meaning
Noun
●
In Electricity:
Any of several
electron
ic
devices
that control
electron
current through
vacuum
,
gas
or
vapor
between
electrodes
within a
sealed
container
, usually of
glass
or
metal
and often
designed
to be
easily
installed
in and
removed
from the
equipment
in which it is used.
Sourced from
Wiktionary
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