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1910 Headset. A headset is a headphone combined with a microphone. Headsets provide the equivalent functionality of a telephone handset with hands-free operation. They are used in call centers and by people in telephone-intensive jobs. The first-ever headset was invented in 1910, by a Stanford University student named Nathaniel Baldwin. [132]
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
In the early 1930s, Scottish engineer J.A. Purves created a zany monowheel vehicle called the Dynasphere. Purves viewed the monowheel as an alternative to traditional automobiles like the Model-T ...
2004: First podcast, invented by Adam Curry and Dave Winer, is a program made available in digital format for download over the Internet and it usually features one or more recurring hosts engaged in a discussion about a particular topic or current event. [544] [545] [546] 2005: YouTube, the first popular video-streaming site, was founded
By 1910 he developed this into the first real tube amplifier, by creating a triode. His invention of the triode is almost simultaneously created by the American Lee de Forest . Max Dieckmann and Gustav Glage use the Braun tube for playback of 20-line black-and-white images.
In 1912 articulated trams, were invented and first used by the Boston Elevated Railway. [7] The Model T Ford dominated the automobile market, selling more than all other makers combined in 1914. [8] In 1919, Alice Parker invented the first system of natural gas-powered central heating for homes; Gideon Sundback patented the first modern zipper. [9]
1910 – Mann–Elkins Act; 1910 – Mann Act; 1911 – Supreme Court breaks up Standard Oil; 1911 – Triangle Shirtwaist Factory fire; 1911 – First Indianapolis 500 is staged; Ray Harroun is the first winner; 1912 – RMS Titanic sank; 1912 – New Mexico and Arizona become states; 1912 – Girl Scouts of the USA was started by Juliette ...
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