In
electronics,
solid state circuits are those that do not contain
vacuum tubes. The term was introduced to describe the transition from valve-based amplifiers to
transistorised amplifiers. Solid state components last much longer than their thermionic counterparts because of their greater resistance to shock, vibration and mechanical wear.
The term is also used in physics: see solid state physics.
All Wikipedia text
is available under the
terms of the GNU Free Documentation License