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Date |
Event(s) |
| 1 | 1931 | - 1931: Harold Edgerton invented stop-action photography.
- 1931: Germans Max Knott and Ernst Ruska co-invent the electron microscope.
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| 2 | 1932 | - 1932: Polaroid photography invented by Edwin Herbert Land.
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| 3 | 1933 | - 1933: Franklin Roosevelt president of the USA 1933-1945.
- 1933: Frequency modulation (FM radio) invented by Edwin Howard Armstrong.
- 1933: Stereo records invented.
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| 4 | 1934 | - 1934: Charles Darrow claims he invented the game Monopoly.
- 1934: Joseph Begun invents the first tape recorder for broadcasting - first magnetic recording.
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| 5 | 1935 | - 1935: Wallace Carothers and DuPont Labs invents nylon (polymer 6.6.).
- 1935: The first canned beer made.
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| 6 | 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.
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| 7 | 1937 | - 1937: Chester F. Carlson invents the photocopier.
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| 8 | 1938 | - 1938: The ballpoint pen invented by Ladislo Biro.
- 1938: Roy J. Plunkett invented tetrafluoroethylene polymers or Teflon.
- 1938: Nescafe or freeze-dried coffee invented.
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| 9 | 1939 | - 1939: World War II begins. Axis Powers: Germany, Italy, Japan vs. Major Allied Powers: United States, Great Britain, France, and Russia. 1939-1945.
- 1939: Igor Sikorsky invents the first successful helicopter.
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| 10 | 1940 | - 1940: Peter Goldmark invents modern color television system.
- 1940: Karl Pabst invents the jeep.
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| 11 | 1941 | - 1941: Konrad Zuse's Z3, the first computer controlled by software.
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| 12 | 1942 | - 1942: John Atanasoff and Clifford Berry built the first electronic digital computer.
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| 13 | 1943 | - 1943: Richard James invents the slinky.
- 1943: James Wright invent silly putty.
- 1943: Swiss chemist, Albert Hofmann discovered the hallucinogenic properties of LSD.
- 1943: Emile Gagnan and Jacques Cousteau invent the aqualung.
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| 14 | 1944 | - 1944: The kidney dialysis machine invented by Willem Kolff.
- 1944: Synthetic cortisone invented by Percy Lavon Julian.
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| 15 | 1945 | - 1945: World War II ends.
- 1945: Harry Truman president of the USA 1945-1953.
- 1945: The atomic bomb invented.
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| 16 | 1946 | - 1946: The microwave oven invented by Percy Spencer.
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| 17 | 1947 | - 1947: British/Hungarian scientist, Dennis Gabor, developed the theory of holography.
- 1947: Mobile phones first invented.
- 1947: Bardeen, Brattain, and Shockley invent the transistor.
- 1947: Earl Silas Tupper patented the Tupperware seal.
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| 18 | 1948 | - 1948: The Frisbee® invented by Walter Frederick Morrison and Warren Franscioni.
- 1948: Velcro ® invented by George de Mestral.
- 1948: Robert Hope-Jones invented the Wurlitzer jukebox.
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| 19 | 1949 | |
| 20 | 1950 | - 1950: Korean War: United States (as part of the United Nations) and South Korea vs. North Korea and Communist China 1950-1953.
- 1950: The first credit card (Diners) invented by Ralph Schneider.
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1931 - 1950 (18 years)