 The first gas laser, the Helium-neon, was invented by William R. Bennett, Don Herriott, and Ali Javan in 1960.The first continuous visible gas laser, operating at 632.8 nm in the red, was invented by A. D. White and J. D. Rigden in 1962.1961 Spreadsheet (electronic)

1961 Wearable computer

1961 Frozen carbonated beverage

1961 Biofeedback

1962 Communications satellite

1962 Chimney starter

1962 Light-emitting diode

A light-emitting-diode (LED) is a semiconductor diode that emits light when an electric current is applied in the forward direction of the device, as in the simple LED circuit.