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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 ...
Many early innovations of the Bronze Age were prompted by the increase in trade, and this also applies to the scientific advances of this period. For context, the major civilizations of this period are Egypt, Mesopotamia, and the Indus Valley, with Greece rising in importance towards the end of the third millennium BC.
Significant advances were also made in military technology with the development of plate armour, steel crossbows and cannon. The Middle Ages are perhaps best known for their architectural heritage: While the invention of the rib vault and pointed arch gave rise to the high rising Gothic style , the ubiquitous medieval fortifications gave the ...
Advances in biology led to large increases in food production, as well as the elimination of diseases such as polio. A massive amount of new technologies were developed in the 20th century. Technologies such as electricity , the incandescent light bulb , the automobile and the phonography , first developed at the end of the 19th century, were ...
As the object is deformed, the foil is deformed, causing its electrical resistance to change. The strain gauge was invented in 1936 by Edward E. Simmons, a professor at the California Institute of Technology, and re-invented in 1938 by Arthur C. Ruge, an earthquake specialist at the Massachusetts Institute of Technology. [272] 1936 Bass guitar
[20] One of the few remaining chinampas at Xochimilco. Chinampa – floating gardens, which were highly productive areas used for farming and growing food, were constructed by the Aztecs to provide food and sustenance to their 250,000 inhabits in the city of Tenochtitlan. The Aztecs used the chinampas in and around Tenochtitlan to grow corn ...
A technological revolution is a period in which one or more technologies is replaced by another new technology in a short amount of time. It is a time of accelerated technological progress characterized by innovations whose rapid application and diffusion typically cause an abrupt change in society.
A timeline of United States inventions (after 1991) encompasses the ingenuity and innovative advancements of the United States within a historical context, dating from the Contemporary era to the present day, which have been achieved by inventors who are either native-born or naturalized citizens of the United States.