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This page was last edited on 22 November 2023, at 19:18 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
The Lower Paleolithic period lasted over 3 million years, during which there many human-like species evolved including toward the end of this period, Homo sapiens.The original divergence between humans and chimpanzees occurred 13 (), however interbreeding continued until as recently as 4 Ma, with the first species clearly belonging to the human (and not chimpanzee) lineage being ...
Pages in category "20th-century inventors" The following 30 pages are in this category, out of 30 total. This list may not reflect recent changes. A. Manuel de Abreu;
The 20th century saw mathematics become a major profession. As in most areas of study, the explosion of knowledge in the scientific age has led to specialization: by the end of the century there were hundreds of specialized areas in mathematics and the Mathematics Subject Classification was dozens of pages long. [72]
20th-century inventions (2 C, 119 P) 21st-century inventions (1 C, 21 P) This page was last edited on 24 July 2023, at 04:41 (UTC). Text is ...
Electrification was rated the most important technical development of the 20th century as the foundational infrastructure for modern civilization. [92] This invention had a profound effect on the workplace because factories could now have second and third shift workers. [93] Shoe production was mechanized during the mid 19th century. [94]
Although the most common type, the gas turbine powered jet engine, was certainly a 20th-century invention, many of the needed advances in theory and technology leading to this invention were made well before this time. The jet engine was clearly an idea whose time had come. Frank Whittle submitted his first patent in 1930. By the late 1930s ...
The 20th century began on 1 January 1901 (MCMI), and ended on 31 December 2000 (MM). [1] [2] It was the 10th and last century of the 2nd millennium and was marked by new models of scientific understanding, unprecedented scopes of warfare, new modes of communication that would operate at nearly instant speeds, and new forms of art and entertainment.