| |
Date |
Event(s) |
| 1 | 1919 | - 1919: The pop-up toaster invented by Charles Strite.
- 1919: Short-wave radio invented.
- 1919: The arc welder invented.
|
| 2 | 1920 | - 1920: The tommy gun patented by John T Thompson.
- 1920: The Band-Aid invented by Earle Dickson
|
| 3 | 1921 | - 1921: Calvin Coolidge president of the USA 1921-1929. Calvin Coolidge, vice president under Warren Harding, sworn in as president the day after Harding dies.
- 1921: Warren Harding president of the USA 1921. Warren Harding dies of an embolism in San Francisco. He had taken ill on 31 Jul 1921.
- 1921: Artificial life begins -- the first robot built.
- 1921: John Larson, a University of California medical student, invented the modern lie detector (polygraph), used by police since 1924.
|
| 4 | 1922 | - 1922: Insulin invented by Sir Frederick Grant Banting.
- 1922: The first 3-D movie (spectacles with one red and one green lens) is released.
|
| 5 | 1923 | - 1923: Garrett A. Morgan invents a traffic signal.
- 1923: The television or iconoscope (cathode-ray tube) invented by Vladimir Kosma Zworykin.
- 1923: John Harwood invented the self-winding watch.
- 1923: Clarence Birdseye invents frozen food.
|
| 6 | 1924 | - 1924: The dynamic loudspeaker invented by Rice and Kellogg.
- 1924: Notebooks with spiral bindings invented.
|
| 7 | 1925 | - 1925: The mechanical television a precursor to the modern television, invented by John Logie Baird.
|
| 8 | 1926 | - 1926: Robert H. Goddard invents liquid-fueled rockets.
|
| 9 | 1927 | - 1927: Erik Rotheim patents an aerosol can.
- 1927: Warren Marrison developed the first quartz clock.
- 1927: Philip Drinker invents the iron lung.
- 1927: Technicolor invented.
- 1927: JWA Morrison invents the first quartz crystal watch.
- 1927: Philo Taylor Farnsworth invents a complete electronic TV system.
|
| 10 | 1928 | - 1928: Scottish biologist Alexander Fleming discovers penicillin.
- 1928: Bubble gum invented by Walter E. Diemer.
- 1928: Jacob Schick patented the electric shaver.
|
| 11 | 1929 | - 1929: Herbert Hoover president of the USA 1929-1933.
- 1929: American, Paul Galvin invents the car radio.
- 1929: Yo-Yo re-invented as an American fad.
|
| 12 | 1930 | - 1930: Scotch tape patented by 3M engineer Richard G. Drew.
- 1930: The "differential analyzer", or analog computer invented by Vannevar Bush at MIT in Boston.
- 1930: Frank Whittle and Dr Hans von Ohain both invent a jet engine.
|
| 13 | 1931 | - 1931: Germans Max Knott and Ernst Ruska co-invent the electron microscope.
- 1931: Harold Edgerton invented stop-action photography.
|
| 14 | 1932 | - 1932: Polaroid photography invented by Edwin Herbert Land.
|
| 15 | 1933 | - 1933: Franklin Roosevelt president of the USA 1933-1945.
- 1933: Frequency modulation (FM radio) invented by Edwin Howard Armstrong.
- 1933: Stereo records invented.
|
| 16 | 1934 | - 1934: Charles Darrow claims he invented the game Monopoly.
- 1934: Joseph Begun invents the first tape recorder for broadcasting - first magnetic recording.
|
| 17 | 1935 | - 1935: Wallace Carothers and DuPont Labs invents nylon (polymer 6.6.).
- 1935: The first canned beer made.
|
| 18 | 1936 | - 1936: Bell Labs invents the voice recognition machine.
- 1936: Samuel Colt patents the Colt revolver.
- 1936: Edward VIII. Ruler of England 1936. House of Windsor (name adopted Jul 17, 1917): Eldest son of George V.
- 1936: George VI. Ruler of England 1936-1952. House of Windsor (name adopted Jul 17, 1917): 2nd son of George V, Duke of York; married Lady Elizabeth Bowes-Lyon.
|
| 19 | 1937 | - 1937: Chester F. Carlson invents the photocopier.
|
1919 - 1937 (17 years)