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Date |
Event(s) |
| 1 | 1901 | - 1901: Theodore Roosevelt president of the USA 1901-1909. Theodore Roosevelt, vice president under William McKinley, sworn in as president upon death of McKinley.
- 1901: King Camp Gillette invents the double-edged safety razor.
- 1901: The first radio receiver, successfully received a radio transmission.
- 1901: Hubert Booth invents a compact and modern vacuum cleaner.
- 1901: Edward VII. Ruler of England 1901-1910. House of Saxe-Coburg and Gotha: Eldest son of Victoria, married Alexandra, Princess of Denmark.
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| 2 | 1902 | - 1902: Willis Carrier invents the air conditioner.
- 1902: French physicist George Claude invents neon light.
- 1902: The lie detector or polygraph machine is invented by James Mackenzie.
- 1902: The birth of the Teddy Bear.
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| 3 | 1903 | - 1903: Edward Binney and Harold Smith co-invent crayons.
- 1903: Bottle-making machinery invented by Michael J. Owens.
- 1903: The Wright brothers invent the first gas motored and manned airplane.
- 1903: Mary Anderson invents windshield wipers.
- 1903: William Coolidge invents ductile tungsten used in lightbulbs.
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| 4 | 1904 | - 1904: Teabags invented by Thomas Suillivan.
- 1904: Benjamin Holt invents a tractor.
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| 5 | 1905 | - 1905: Albert Einstein published the Theory of Relativity and made famous the equation, E = mc2.
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| 6 | 1906 | - 1906: William Kellogg invents Cornflakes.
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| 7 | 1907 | - 1907: Color photography invented by Auguste and Louis Lumiere.
- 1907: The very first piloted helicopter was invented by Paul Cornu.
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| 8 | 1908 | - 1908: The gyrocompass invented by Elmer A. Sperry.
- 1908: Cellophane invented by Jacques E. Brandenberger.
- 1908: Model T automobile first sold.
- 1908: J W Geiger and W Müller invent the geiger counter.
- 1908: Fritz Haber invents the Haber Process for making artificial nitrates.
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| 9 | 1909 | - 1909: William Taft president of the USA 1909-1913.
- 1909: Instant coffee invented by G. Washington.
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| 10 | 1910 | - 1910: Thomas Edison demonstrated the first talking motion picture.
- 1910: Georges Claude displayed the first neon lamp to the public on December 11, 1910, in Paris.
- 1910: George V. Ruler of England 1910-1936. House of Windsor (name adopted Jul 17, 1917): 2nd son of Edward VII, married Princess Mary of Teck. Accession, Jan 20, abdication, Dec 10.
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| 11 | 1911 | - 1911: Charles Franklin Kettering invents the first automobile electrical ignition system.
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| 12 | 1912 | - 1912: Motorized movie cameras invented, and replaced hand-cranked cameras.
- 1912: The first tank patented by Australian inventor De La Mole.
- 1912: Clarence Crane created Life Savers candy in 1912.
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| 13 | 1913 | - 1913: Woodrow Wilson president of the USA 1913-1921.
- 1913: The crossword puzzle invented by Arthur Wynne.
- 1913: The Merck Chemical Company patented, what is now known as, ecstasy.
- 1913: Mary Phelps Jacob invents the bra.
- 1913: Gideon Sundback invents the modern zipper.
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| 14 | 1914 | - 1914: World War I begins. Triple Alliance: Germany, Italy, and Austria-Hungary vs. Triple Entente: Britain, France, and Russia. The United States joined on the side of the Triple Entente in 1917.
- 1914: Garrett A. Morgan invents the Morgan gas mask.
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| 15 | 1915 | - 1915: Eugene Sullivan and William Taylor co-invented Pyrex in New York City.
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| 16 | 1916 | - 1916: Radio tuners invented that received different stations.
- 1916: Stainless steel invented by Henry Brearly.
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| 17 | 1918 | - 1918: World War I ends.
- 1918: Charles Jung invented fortune cookies.
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