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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
The crankshaft was invented by Al-Jazari in 1206, [63] [64] and is central to modern machinery such as the steam engine, internal combustion engine and automatic controls. [65] [66] The camshaft was also first described by Al-Jazari in 1206. [67] Early programmable machines were also invented in the Muslim world.
Streetcars created enormous demand for early electricity. This Siemens Tram from 1884 required 500 V direct current, which was typical. Much of early electricity was direct current, which could not easily be increased or decreased in voltage either for long-distance transmission or for sharing a common line to be used with multiple types of electric devices.
Over 50% of the world's borders today were drawn as a result of British and French imperialism. [ 2 ] [ 3 ] [ 4 ] An unambiguous measure is the date of national constitutions ; but as constitutions are an almost entirely modern concept, all formation dates by that criterion are modern or early modern (the oldest extant constitution being that ...
The natural evolution of the Sun made it progressively more luminous during the Archean and Proterozoic eons; the Sun's luminosity increases 6% every billion years. [59]: 165 As a result, the Earth began to receive more heat from the Sun in the Proterozoic eon. However, the Earth did not get warmer.
The history of the Internet and the history of hypertext date back significantly further than that of the World Wide Web. Tim Berners-Lee invented the World Wide Web while working at CERN in 1989. He proposed a "universal linked information system" using several concepts and technologies, the most fundamental of which was the connections that ...
Arabic translations of the two astronomers' texts were soon available in the Islamic world, introducing what would become Arabic numerals to the Islamic world by the 9th century. [ 76 ] [ 77 ] Narayana Pandita ( Sanskrit : नारायण पण्डित ) (1340–1400 [ 78 ] ) was an Indian mathematician .
In 132, polymath Zhang Heng invented the seismoscope for detecting earthquakes, which was not invented anywhere else in the world until 1,100 years later. [25] Huan Tan's Xinlun is the earliest text to describe the trip hammer device powered by hydraulics (i.e., a waterwheel), which was used to pound and decorticate grain. [26]