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Date |
Event(s) |
| 1 | 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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| 2 | 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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| 3 | 1904 | - 1904: Teabags invented by Thomas Suillivan.
- 1904: Benjamin Holt invents a tractor.
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| 4 | 1905 | - 1905: Albert Einstein published the Theory of Relativity and made famous the equation, E = mc2.
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| 5 | 1906 | - 1906: William Kellogg invents Cornflakes.
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| 6 | 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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| 7 | 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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| 8 | 1909 | - 1909: William Taft president of the USA 1909-1913.
- 1909: Instant coffee invented by G. Washington.
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1902 - 1909 (7 years)