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1900: The first Zeppelin is designed by Theodor Kober. 1901: The first motorized cleaner using suction, a powered "vacuum cleaner", is patented independently by Hubert Cecil Booth and David T. Kenney. [453] 1903: The first successful gas turbine is invented by Ægidius Elling. 1903: Édouard Bénédictus invents laminated glass.
It was not until 1930, he is called a " telescreen sold "at a price of 20 pounds. 1927 The first fully electronic music boxes ("Jukeboxes") used in the USA on the market. German Grammophon on sale due to a license agreement with the Brunswick-Balke-Collender Company. Its first fully electronic turntables.
1930: Subrahmanyan Chandrasekhar discovers his eponymous limit of the maximum mass of a white dwarf star 1931: Kurt Gödel : incompleteness theorems prove formal axiomatic systems are incomplete 1932: James Chadwick : Discovery of the neutron
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
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.
1900: Drude model by Paul Drude [449] 1900: Planck constant and Planck's law by Max Planck [450] 1900–1930: Quantum mechanics by i.a. Max Planck and Werner Heisenberg [451] 1901: Modern pyrometer by Ludwig Holborn and Ferdinand Kurlbaum [452] 1904: Boundary layer theory by Ludwig Prandtl [453] 1904: First radar system by Christian Hülsmeyer ...
December 9 – Joseph Needham (died 1995), English biochemist and writer on the history of science and technology in China. December 12 – Mária Telkes (died 1995), Hungarian-American scientist and inventor. December 17 – Mary Cartwright (died 1998), English mathematician, one of the first people to analyze a dynamical system with chaos. [17]
March 4, 1901 – President McKinley begins second term; Roosevelt becomes the 25th vice president. September 6, 1901 – McKinley is shot, in Buffalo, New York.; September 14, 1901 – President McKinley dies, Vice President Roosevelt becomes the 26th president [1]