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What things were invented in the 20s aka the Roaring Twenties?

April 26, 2017AKA Arts History Humanities invented roaring twenties

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What things were invented in the 20s aka the Roaring Twenties?

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Inventions 1920: The tommy gun patented by John T Thompson. The Band-Aid (pronounced ‘ban-‘dade) invented by Earle Dickson. 1921: Artificial life begins — the first robot built. John Larson invented the lie detector. 1922: Insulin invented by Sir Frederick Grant Banting. The first 3-D movie (spectacles with one red and one green lens) is released. 1923: Garrett A. Morgan invents a traffic signal. The television or iconoscope (cathode-ray tube) invented by Vladimir Kosma Zworykin. John Harwood invented the self-winding watch. Clarence Birdseye invents frozen food. 1924: The dynamic loudspeaker invented by Rice and Kellogg. Notebooks with spiral bindings invented. 1925: The mechanical television a precursor to the modern television, invented by John Logie Baird. 1926: Robert H. Goddard invents liquid-fueled rockets. 1927: Eduard Haas III invents PEZ candy. JWA Morrison invents the first quartz crystal watch. Philo Taylor Farnsworth invents an electronic TV system. Technicolor invented.