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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 ...
2 Pre-20th century. 3 20th century. 4 21st century. ... 1999 – Discovery of ... 2010-Over the past two decades, a considerable focus has been directed toward ...
Pages in category "20th-century inventions" The following 126 pages are in this category, out of 126 total. This list may not reflect recent changes. A.
From the first Apple computer to the COVID-19 vaccine, here are the most revolutionary inventions that were born in the U.S.A. in the past half-century.
Heron (c. 10–70), Roman Egypt – usually credited with invention of the aeolipile, although it may have been described a century earlier; John Herschel (1792–1871), UK – photographic fixer (hypo), actinometer; Harry Houdini (1874–1926) U.S. – flight time illusion; Heinrich Hertz (1857–1894), Germany – radio telegraphy ...
The death of Franz Reichelt (d. 1912), who jumped off the Eiffel Tower expecting his contraption to act as a parachute. Ismail ibn Hammad al-Jawhari (died c. 1003–1010), a Kazakh Turkic scholar from Farab, attempted to fly using two wooden wings and a rope. He leapt from the roof of a mosque in Nishapur and fell to his death. [5]
This is a list of lists of deaths of notable people, organised by year. New deaths articles are added to their respective month (e.g., Deaths in November 2024 ) and then linked below. 2024
4th century BC: The first true formal system is constructed by Pāṇini in his Sanskrit grammar. [34] [35] 4th century BC: Eudoxus of Cnidus states the Archimedean property. [36] 4th century BC: Thaetetus shows that square roots are either integer or irrational. 4th century BC: Thaetetus enumerates the Platonic solids, an early work in graph ...