Education is a growth industry. A.C. Current, Radio, Discovery of the electron, Radio Teletype, Stock Ticker Television Tube, Television Camera, Maxwell's equations and Radio and X rays, Radar, Electric control systems become more and more a part of other devices. Electric light, phonograph, radio-television, large and small appliances increase domestic demand for current many times over. Rural electrification and Irrigation transform desert America. Use of Aluminum increases.
Computers become more and more powerful as they become smaller.
But computers are still analog. Bell Labs is working on ways to allow computers to 'talk' to each other over the phone lines. Nuclear Power is growing out of its infancy. We cease using COAL for transportation and convert to using it for electrical generation. School buses alter the nature of educational delivery.