Important Inventions In The Year 1920

John Logie Baird develops mechanical television.

Philo T. Farnsworth invents modern electronic television.

Robert H. Goddard develops the principle of the modern, liquid-fueled space rocket.

German engineer Gustav Tauschek and American Paul Handel independently develop primitive optical character recognition (OCR) scanning systems.

Albert W. Hull invents the magnetron, a device that can generate microwaves from electricity.