How to use in-sentence of “vacuum tube”:
+ It is not a vacuum tube diode, which has only two wires electrode.
+ The name triode was created because people needed to know which kind of vacuum tube it is, rather than a diode, tetrode, or pentode.
+ For a large television, this vacuum tube can be quite heavy.
+ The video camera tube was a type of vacuum tube used to capture television images between the 1930s and 1980s.
+ A later design often used with vacuum tube car radios consisted of a rapidly switching relay.
+ Soon, vacuum tube radios became rare.
