Lee De Forest: Grandfather of Television

Born today was a fellow  named Lee
Whose invention made possible  early TV.
We all  should remember, whether  richest or poorest,
That once our screens showed  all  the trees for De Forest.*

*He invented the Audion vacuum tube which was the key component of all radio, telephone, radar, television, and computer systems before the invention of the transistor in 1947.

File:Triode tube 1906.jpg


Filed under: history, science

Leave a comment