Ajit Pai @AjitPai
OTD in 1906, Lee DeForest announced the invention of what was the 1st practical amplification device. The triode “made possible live radio broadcasting” and was key to “all radio, telephone, radar, television, and computer systems before the invention of the transistor in 1947.” https://t.co/qxgo05NKkH — PolitiTweet.org