Difference between revisions of "Least Action"

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==Context==
 
==Context==
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This thesis introduced the ideas that came to be known as the [https://en.m.wikipedia.org/wiki/Wheeler%E2%80%93Feynman_absorber_theory
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Typically [[Least Action]] is a metric to decimeter the least energetic way to determine the path of a particle or wave in physics.
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Wheeler–Feynman absorber theory (also called the Wheeler–Feynman time-symmetric theory)
 
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]derived from the assumption that the solutions of the electromagnetic field equations must be invariant under time-reversal transformation, as are the field equations themselves. Indeed, there is no apparent reason for the time-reversal symmetry breaking,
 
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Maxwell's equations and the equations for electromagnetic waves have, in general, two possible solutions: a retarded (delayed) solution and an advanced one. This symmetry can be viewed as the primary distinction between the laws of physics versus the common sense laws or time as we experience it.
 
  
 
==The Principle==
 
==The Principle==

Revision as of 12:56, 11 June 2023

Full Title

Least Action is used with variational calculus to determine the least costly path to a given goal.

Context

Typically Least Action is a metric to decimeter the least energetic way to determine the path of a particle or wave in physics.

The Principle

The principle of least action originates in the idea that, if nature has a purpose, it should follow a minimum or critical path. This simple principle, and its variants and generalizations, applies to optics, mechanics, electromagnetism, relativity, and quantum mechanics, and provides an essential guide to understanding the beauty of physics.[1]

References

  1. ↑ Alberto Rojo and Anthony Bloch, The Principle of Least Action = History and Physics Cambridge UP (2018-04) ISBN: 9780521869027

Other Material

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