Concept stub
Vacuum Tube
Hardware
The first electronic switch and amplifier.
Vacuum Tube — The first electronic switch and amplifier.
This entry is a stub. It will be written out in full when a Chromix article calls for it. What belongs here: what Vacuum Tube actually did, why it mattered at the time, and what it made possible afterwards — each claim carrying its own source.
This entry is a stub. Most First Principles entries begin short and deepen only when a new article calls for it — the encyclopedia grows as Chromix writes.