Fermat's principle


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Related to Fermat's principle: Snell's law, Huygens principle

Fermat's principle

n
(General Physics) physics the principle that a ray of light passes from one point to another in such a way that the time taken is a minimum
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Mathematics: ABEGG'S RULE, ABEL'S THEOREM, ARCHIMEDES' PROBLEM, BERNOULLI'S THEOREM, DE MOIVRE'S THEOREM, DE MORGAN'S THEOREM, DESARGUES' THEOREM, DESCARTES' RULE OF SIGNS, EUCLID'S ALGORITHM, EULER'S EQUATION/FORMULA, FERMAT'S PRINCIPLE, FOURIER'S THEOREM, GAUSS'S THEOREM, GOLDBACH'S CONJECTURE, HUDDE'S RULES, LAPLACE'S EQUATIONS, NEWTON'S METHOD/PARALLELOGRAM, PASCAL'S LAW/TRIANGLE, RIEMANN'S HYPOTHESIS
Mustapha [5],, en su trabajo "Light Deflection, Lensing, and Time Delays from Gravitational Potentials and Fermat's Principle in the Presence of a Cosmological Constant", realizo un estudio de las posibles consecuencias en las expresiones del retardo temporal mediante la integracion de los potenciales gravitacionales y el principio de Fermat Encontro que un ter mino, en este caso la constante cosmologica, aparece en el angulo de desviacion, y esto se manifesto en los calculos que arrojo el retardo temporal.
In order to estimate the path of the wave took, we have made use of Fermat's principle which states the path that minimises the travel time is the real path.