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Timeline of historic inventions. ... 1900: The first Zeppelin is designed by Theodor Kober. 1901: ... On 16 January 1930, Whittle submitted his first patent (granted ...
Brief History of Electronics Timeline ; Date 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 ...
Ruth Wakefield of Whitman, Massachusetts, invented chocolate chips and chocolate chip cookies in 1930. Her new cookie invention was called the "Toll House Cookie" which used broken-up bars of semi-sweet chocolate. [236] 1930 Thermistor. A thermistor is a type of resistor with electrical resistance inversely proportional to its temperature.
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; Timeline of United States inventions (after ...
The timeline begins at the Bronze Age, as it is difficult to give even estimates for the timing of events prior to this, such as of the discovery of counting, natural numbers and arithmetic. To avoid overlap with timeline of historic inventions , the timeline does not list examples of documentation for manufactured substances and devices unless ...
This section of the timeline of United States history concern events from 1900 to 1929. U.S. territorial extent in 1900. 1900s
c. 1900 United States: The Standard Adding Machine Company released the first 10-key adding machine in about 1900. The inventor, William Hopkins, filed his first patent on October 4, 1892. The 10 keys were set on a single row. 1902 United States: First model of Dalton adding machine is built. [49]
1839, 1930: Discovery of polystyrene by Eduard Simon, was made a commercial product by IG Farben in 1930 [131] c. 1840: Nitrogen-based fertiliser by Justus von Liebig, [132] important innovations were later made by Fritz Haber and Carl Bosch (Haber process) in the 1900s [133] 1846: Discovery of guncotton by Christian Friedrich Schönbein [134]