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  2. Timeline of United States inventions (1890–1945) - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_United_States...

    1934 Acrostic (puzzle) An acrostic is a type of word puzzle, related somewhat to crossword puzzles, that uses an acrostic form with lettered clues and numbered blanks. The acrostic puzzle was invented in 1934 by Elizabeth Kingsley, first appearing in the March 31 edition of the Saturday Evening Post. [256] 1935 Richter magnitude scale

  3. Timeline of historic inventions - Wikipedia

    en.wikipedia.org/.../Timeline_of_historic_inventions

    The dates listed in this section refer to the earliest evidence of an invention found and dated by archaeologists (or in a few cases, suggested by indirect evidence). Dates are often approximate and change as more research is done, reported and seen. Older examples of any given technology are often found.

  4. Timeline of electrical and electronic engineering - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_electrical_and...

    Invention/Discovery Inventor(s) 1900: Old quantum theory: Planck 1905: Theory of relativity: Einstein 1918: Atomic transmutation: Rutherford 1932: Neutron: Chadwick 1932: Particle accelerator: Cockcroft and Walton 1935: Scanning electron microscope: Knoll 1937: Xerography: Carlson 1937: Oscilloscope: Von Ardenne, Dowling, and Bullen 1950: Modem ...

  5. Timeline of United States inventions - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_United_States...

    The following articles cover the timeline of United States inventions: Timeline of United States inventions (before 1890), before the turn of the century; Timeline of United States inventions (1890–1945), before World War II; Timeline of United States inventions (1946–1991), during the Cold War

  6. List of British innovations and discoveries - Wikipedia

    en.wikipedia.org/wiki/List_of_British...

    Engineers during World War Two test a model of a Halifax bomber in a wind tunnel, an invention that dates back to 1871.. The following is a list and timeline of innovations as well as inventions and discoveries that involved British people or the United Kingdom including the predecessor states before the Treaty of Union in 1707, the Kingdom of England and the Kingdom of Scotland.

  7. Timeline of scientific discoveries - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_scientific...

    1924: Edwin Hubble: the discovery that the Milky Way is just one of many galaxies; 1925: Erwin Schrödinger: Schrödinger equation (Quantum mechanics) 1925: Cecilia Payne-Gaposchkin: Discovery of the composition of the Sun and that hydrogen is the most abundant element in the Universe; 1927: Werner Heisenberg: Uncertainty principle (Quantum ...

  8. 1900 in science - Wikipedia

    en.wikipedia.org/wiki/1900_in_science

    The year 1900 in science and technology involved some significant events, listed below. ... Karl Landsteiner makes the first discovery of blood types, ...

  9. List of English inventions and discoveries - Wikipedia

    en.wikipedia.org/wiki/List_of_English_inventions...

    1913: The crossword puzzle invented by Liverpool-born Arthur Wynne (1871–1945). 1922: Discovery of Tutankhamun's tomb by Archaeologist and Egyptologist Howard Carter, funded by Lord Carnarvon. 1933: Bayko – a plastic building model construction toy, and one of the earliest plastic toys to be marketed [249] – invented by Charles Plimpton ...