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World Brain is a collection of essays and addresses by the English science fiction pioneer, social reformer, evolutionary biologist and historian H. G. Wells, dating from the period of 1936–1938. [ 1] Throughout the book, Wells describes his vision of the World Brain: a new, free, synthetic, authoritative, permanent "World Encyclopaedia ...
Mercury is a chemical element; it has symbol Hg and atomic number 80. It is also known as quicksilver and was formerly named hydrargyrum ( / haɪˈdrɑːrdʒərəm / hy-DRAR-jər-əm) from the Greek words hydor (water) and argyros (silver), from which its chemical symbol is derived. [ 8]
Sodium amalgam, with the common formula Na (Hg), is an alloy of mercury and sodium. The term amalgam is used for alloys, intermetallic compounds, and solutions (both solid solutions and liquid solutions) involving mercury as a major component. Sodium amalgams are often used in reactions as strong reducing agents with better handling properties ...
Roald Dahl[ a] (13 September 1916 – 23 November 1990) was a British author of popular children's literature and short stories, a poet, screenwriter and a wartime fighter ace. [ 1][ 2] His books have sold more than 300 million copies worldwide. [ 3][ 4] He has been called "one of the greatest storytellers for children of the 20th century".
Vomiting is a common condition affecting about 50% of pregnant women, with another 25% having nausea. [53] However, the incidence of HG is only 0.3–1.5%. [4] After preterm labor, hyperemesis gravidarum is the second most common reason for hospital admission during the first half of pregnancy. [16]
Gary L. Wells in 2011. Gary L. Wells is an American psychologist and a scholar in eyewitness memory research. Wells is a professor at Iowa State University with a research interest in the integration of both cognitive psychology and social psychology and its interface with law. He has conducted research on lineup procedures, reliability and ...
The hypothesis of dark matter has an elaborate history. [18] In the appendices of the book Baltimore lectures on molecular dynamics and the wave theory of light where the main text was based on a series of lectures given in 1884, [19] Lord Kelvin discussed the potential number of stars around the Sun from the observed velocity dispersion of the stars near the Sun, assuming that the Sun was 20 ...
25,000,000 – 50,000,000 (estimated) The Black Death was a bubonic plague pandemic occurring in Europe from 1346 to 1353. It was one of the most fatal pandemics in human history; as many as 50 million people [ 2] perished, perhaps 50% of Europe's 14th century population. [ 3] The disease is caused by the bacterium Yersinia pestis and spread by ...
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