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Vor 21 Stunden · Richard Phillips Feynman (/ ˈ f aɪ n m ə n /; May 11, 1918 – February 15, 1988) was an American theoretical physicist, known for his work in the path integral formulation of quantum mechanics, the theory of quantum electrodynamics, the physics of the superfluidity of supercooled liquid helium, as well as his work in particle physics for which he proposed the parton model.
Vor 21 Stunden · Senegal, [f] officially the Republic of Senegal, [g] is the westernmost country in continental Africa, situated on the Atlantic Ocean coastline. Senegal is bordered by Mauritania to the north, Mali to the east, Guinea to the southeast and Guinea-Bissau to the southwest. Senegal nearly surrounds The Gambia, a country occupying a narrow sliver of ...
Vor 21 Stunden · This means that the greater this variability in effect sizes (otherwise known as heterogeneity), the greater the un-weighting and this can reach a point when the random effects meta-analysis result becomes simply the un-weighted average effect size across the studies. At the other extreme, when all effect sizes are similar (or variability does not exceed sampling error), no REVC is applied and ...
Vor 21 Stunden · Chinese ( simplified Chinese: 汉语; traditional Chinese: 漢語; pinyin: Hànyǔ; lit. ' Han language' or 中文; Zhōngwén; 'Chinese writing') is a group of languages [e] spoken natively by the ethnic Han Chinese majority and many minority ethnic groups in China. Approximately 1.35 billion people, or around 16% of the global population ...
Vor 21 Stunden · Brown v. Board of Education of Topeka, 347 U.S. 483 (1954), [1] was a landmark decision of the U.S. Supreme Court ruling that U.S. state laws establishing racial segregation in public schools are unconstitutional, even if the segregated schools are otherwise equal in quality. The decision partially overruled the Court's 1896 decision Plessy v.
Vor 21 Stunden · Disability. Disability is the experience of any condition that makes it more difficult for a person to do certain activities or have equitable access within a given society. [1] Disabilities may be cognitive, developmental, intellectual, mental, physical, sensory, or a combination of multiple factors. Disabilities can be present from birth or ...
Vor 21 Stunden · Russian Civil War. The Russian Civil War [a] was a multi-party civil war in the former Russian Empire sparked by the overthrowing of the social-democratic Russian Provisional Government in the October Revolution, as many factions vied to determine Russia's political future. It resulted in the formation of the Russian Socialist Federative Soviet ...
