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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.
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; 1932: Karl Guthe Jansky discovers the first astronomical radio source, Sagittarius A
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.
History of technology by type; List of science timelines; The year 1900 in science and technology involved some significant events, listed below. Aeronautics
Image credits: historians Historian Liz Covart explains that history isn't just about what happened but how we interpret it as well. "The past happened, but history is made," Liz says. "Every ...
The cotton gin, invented by Eli Whitney, revolutionized slave-based agriculture in the Southern United States.. The technological and industrial history of the United States describes the emergence of the United States as one of the most technologically advanced nations in the world in the 19th and 20th centuries.
These are just a few Black history fun facts plucked from the book “Timelines from Black History: Leaders, Legends, Legacies.” We hope it's a good start — but, it's just a start. We hope it ...
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