History of Variational Principles in Physics
978-613-2-53042-4
6132530428
84
2010-08-11
34,00 €
eng
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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. A variational principle in physics is an alternative method for determining the state or dynamics of a physical system, by identifying it as an extremum (minimum, maximum or saddle point) of a function or functional. This article describes the historical development of such principles.The earliest precedents of the principle of least action can be found in studies of the specular reflection and refraction of light. Hero of Alexandria noted that the law of reflection θi = θr follows from the assumption that light travels along the shortest distance between two given points.
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