Fermat's principle
Fermat's principle, also known as the principle of least time, is the link between ray optics and wave optics. In its original "strong" form, Fermat's principle states that the path taken by a ray between two given points is the path that can be traversed in the least time. In order to be true in all cases, this statement must be weakened by replacing the "least" time with a time that is "stationary" with respect to variations of the path — so that a deviation in the path causes, at most, a second-order change in the traversal time. To put it loosely, a ray path is surrounded by close paths that can be traversed in very close times. It that this technical definition corresponds to more intuitive notions of a ray, such as a line of sight or the path of a narrow beam.
known for
Fermat's PrincipleFermat's Principle Of Least TimeFermat's Principle of Least TimeFermat's principle of least timeFermat principleFermats PrincipleFermats principleFermat’s principleLeast-time principleLeast Time PrincipleLeast timeLeast time principlePrinciple of least timePrinciple of stationary timeStationary time principle
Wikipage redirect
AdequalityAugustin-Jean FresnelBrachistochrone curveCalculus of variationsComputation of radiowave attenuation in the atmosphereEikonal equationEnvelope (mathematics)Fermat's PrincipleFermat's Principle Of Least TimeFermat's Principle of Least TimeFermat's and energy variation principles in field theoryFermat's principle of least timeFermat's theoremFermat principleFermats PrincipleFermats principleFermat’s principleFetch (game)Geometrical opticsGlossary of civil engineeringGlossary of engineeringGlossary of physicsGradient-index opticsHamilton's optico-mechanical analogyHero of AlexandriaHistory of variational principles in physicsHuygens–Fresnel principleIndex of optics articlesIndex of physics articles (F)Lagrangian mechanicsLeast-time principleLeast Time PrincipleLeast timeLeast time principleLightList of Egyptian inventions and discoveriesList of eponyms (A–K)List of scientific laws named after peopleList of things named after Pierre de FermatList of variational topics
Link from a Wikipage to another Wikipage
known for
primaryTopic
Fermat's principle
Fermat's principle, also known as the principle of least time, is the link between ray optics and wave optics. In its original "strong" form, Fermat's principle states that the path taken by a ray between two given points is the path that can be traversed in the least time. In order to be true in all cases, this statement must be weakened by replacing the "least" time with a time that is "stationary" with respect to variations of the path — so that a deviation in the path causes, at most, a second-order change in the traversal time. To put it loosely, a ray path is surrounded by close paths that can be traversed in very close times. It that this technical definition corresponds to more intuitive notions of a ray, such as a line of sight or the path of a narrow beam.
has abstract
Das Fermatsche Prinzip (nach P ...... ermatschen Prinzips darstellt.
@de
El principio de Fermat, en ópt ...... leyes de la óptica geométrica.
@es
En òptica, el principi de Ferm ...... e Snell de la refracció i la .
@ca
Fermat's principle, also known ...... quences of Fermat's principle.
@en
Fermaten printzipioa optika ge ...... akzio legeak baliokideak dira.
@eu
Fermats princip lyder (i sin h ...... ells lag och reflektionslagen.
@sv
Fermatův princip je fyzikální ...... ení nebo Snellova zákona lomu.
@cs
Het principe van Fermat is een ...... inste werking in de mechanica.
@nl
In ottica, il principio di Fer ...... e, e spiega la legge di Snell.
@it
Le principe de Fermat est un p ...... a loi de Snell-Descartes, etc.
@fr
Link from a Wikipage to an external page
Wikipage page ID
page length (characters) of wiki page
Wikipage revision ID
1,020,826,546
Link from a Wikipage to another Wikipage
wikiPageUsesTemplate
subject
hypernym
comment
Das Fermatsche Prinzip (nach P ...... erenz ist folglich destruktiv.
@de
El principio de Fermat, en ópt ...... variaciones de la trayectoria.
@es
En òptica, el principi de Ferm ...... e Snell de la refracció i la .
@ca
Fermat's principle, also known ...... or the path of a narrow beam.
@en
Fermaten printzipioa optika ge ...... akzio legeak baliokideak dira.
@eu
Fermats princip lyder (i sin h ...... ells lag och reflektionslagen.
@sv
Fermatův princip je fyzikální ...... ení nebo Snellova zákona lomu.
@cs
Het principe van Fermat is een ...... inste werking in de mechanica.
@nl
In ottica, il principio di Fer ...... ndice di rifrazione del mezzo.
@it
Le principe de Fermat est un p ...... a loi de Snell-Descartes, etc.
@fr
label
Fermat's principle
@en
Fermaten printzipioa
@eu
Fermats princip
@sv
Fermatsches Prinzip
@de
Fermatův princip
@cs
Principe de Fermat
@fr
Principe van Fermat
@nl
Principi de Fermat
@ca
Principio de Fermat
@es
Principio di Fermat
@it