the.com/vacuum tube
a lightbulb that learned to think, then got replaced by a rock.
means a sealed glass tube where electrons flow through emptiness to amplify or switch electrical signals.
from born from edison's 1883 lightbulb tinkering, refined by john ambrose fleming and lee de forest in the early 1900s into diodes and triodes that made radio, radar, and early computers possible.
eniac countused nearly 18,000 tubes, failed constantly
name clashbritish call it a valve, americans a tube
still aliveguitar amps and audiophiles swear by tube warmth
heat problemtubes ran hot enough to toast rooms