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13 ore fa · Motivation and overview The graph of the Dirac delta is usually thought of as following the whole x -axis and the positive y -axis. : 174 The Dirac delta is used to model a tall narrow spike function (an impulse), and other similar abstractions such as a point charge, point mass or electron point. For example, to calculate the dynamics of a billiard ball being struck, one can approximate the ...
13 ore fa · 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.
13 ore fa · Dirac, Paul Doppler effect Duality. 参考文献 Reference. Stephen Hawking, A Brief History of Time: from the Big Bang to Black Holes, Bantam Books ...
13 ore fa · Dirac, Paul Doppler effect Duality. 参考文献 Reference. Stephen Hawking, A Brief History of Time: from the Big Bang to Black Holes, Bantam Books ...
13 ore fa · İngiltere'nin en eski ve en ünlü Hristiyan yapılarından biridir. 2011 nüfus sayımında İngiltere nüfusunun %59,4'ü dininin Hristiyan olduğunu, %24,7'si herhangi bir dini olmadığını, %5'i Müslüman olduğunu, %3,7'si diğer dinlere mensup olduğunu açıklarken, %7,2'si ise dinini belirtmemiştir. [167]
13 ore fa · Paul Coghlan, 79, Irish politician, senator (1997–2020) and leas-chathaoirleach (2016–2020). Alan Dowding, 94, Australian cricketer (Oxford University, Commonwealth XI, MCC). Charles Elworthy, 61, New Zealand economist and social scientist. Fields of Omagh, 25, Australian Thoroughbred racehorse.
13 ore fa · Januar 1933 erfolgt die Ernennung Adolf Hitlers zum Reichskanzler durch Reichspräsident Hindenburg. Hindenburg, der sich lange gesträubt hat, wird mit dem Hinweis beruhigt, dass ein von einer konservativen Kabinettsmehrheit „eingerahmter“ NSDAP-Führer nur eine geringe Gefahr bedeute.
