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- Optical_theorem abstract "In physics, the optical theorem is a general law of wave scattering theory, which relates the forward scattering amplitude to the total cross section of the scatterer. It is usually written in the formwhere f(0) is the scattering amplitude with an angle of zero, that is, the amplitude of the wave scattered to the center of a distant screen, and k is the wave vector in the incident direction. Because the optical theorem is derived using only conservation of energy, or in quantum mechanics from conservation of probability, the optical theorem is widely applicable and, in quantum mechanics, includes both elastic and inelastic scattering. Note that the above form is for an incident plane wave; a more general form discovered by Werner Heisenberg can be writtenNotice that as a natural consequence of the optical theorem, an object that scatters any light at all ought to have a nonzero forward scattering amplitude. However, the physically observed field in the forward direction is a sum of the scattered and incident fields, which may add to zero.".
- Optical_theorem wikiPageID "2539254".
- Optical_theorem wikiPageRevisionID "583775706".
- Optical_theorem hasPhotoCollection Optical_theorem.
- Optical_theorem subject Category:Physics_theorems.
- Optical_theorem subject Category:Quantum_field_theory.
- Optical_theorem subject Category:Scattering,_absorption_and_radiative_transfer_(optics).
- Optical_theorem subject Category:Scattering_theory.
- Optical_theorem comment "In physics, the optical theorem is a general law of wave scattering theory, which relates the forward scattering amplitude to the total cross section of the scatterer. It is usually written in the formwhere f(0) is the scattering amplitude with an angle of zero, that is, the amplitude of the wave scattered to the center of a distant screen, and k is the wave vector in the incident direction.".
- Optical_theorem label "Optical theorem".
- Optical_theorem label "Optisches Theorem".
- Optical_theorem label "Оптическая теорема".
- Optical_theorem sameAs Optisches_Theorem.
- Optical_theorem sameAs 광학_정리.
- Optical_theorem sameAs m.07lt6n.
- Optical_theorem sameAs Q1136262.
- Optical_theorem sameAs Q1136262.
- Optical_theorem wasDerivedFrom Optical_theorem?oldid=583775706.
- Optical_theorem isPrimaryTopicOf Optical_theorem.