From that night on, the electron-up to that time largely the plaything of the scientist-had clearly entered the field as a potent agent in the supplying of man's commercial and industrial needs... The electronic amplifier tube now underlies the whole art of communications, and this in turn is at least in part what has made possible its application to a dozen other arts. It was a great day for both science and industry when they became wedded through the development of the electronic amplifier tube.