optical theorem

Target entity: optical theorem
Context triple: [Kramers–Heisenberg dispersion formula, relatedTo, optical theorem]

• A. Poynting theorem
  The Poynting theorem is a fundamental principle in electromagnetism that expresses the conservation of electromagnetic energy by relating the flow of energy, energy density, and work done on charges.
• B. Etherington reciprocity theorem
  The Etherington reciprocity theorem is a fundamental result in relativistic cosmology that links luminosity distance and angular diameter distance, underpinning observational tests of the expanding universe.
• C. An Introduction to the Theory of Optics
  An Introduction to the Theory of Optics is a classic physics textbook that systematically presents the fundamental principles and mathematical treatment of optical phenomena.
• D. Kirchhoff diffraction theory
  Kirchhoff diffraction theory is a classical wave optics framework that models light propagation and diffraction by treating wavefronts as superpositions of secondary spherical waves emitted from an aperture.
• E. Huygens–Fresnel principle
  The Huygens–Fresnel principle is a fundamental concept in wave optics that explains how every point on a wavefront acts as a source of secondary wavelets whose interference determines the wave’s subsequent propagation and diffraction.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: optical theorem
Target entity description: The optical theorem is a fundamental result in scattering theory that links the total cross section of a process to the imaginary part of the forward scattering amplitude, expressing conservation of probability.

• A. Poynting theorem
  The Poynting theorem is a fundamental principle in electromagnetism that expresses the conservation of electromagnetic energy by relating the flow of energy, energy density, and work done on charges.
• B. Etherington reciprocity theorem
  The Etherington reciprocity theorem is a fundamental result in relativistic cosmology that links luminosity distance and angular diameter distance, underpinning observational tests of the expanding universe.
• C. An Introduction to the Theory of Optics
  An Introduction to the Theory of Optics is a classic physics textbook that systematically presents the fundamental principles and mathematical treatment of optical phenomena.
• D. Kirchhoff diffraction theory
  Kirchhoff diffraction theory is a classical wave optics framework that models light propagation and diffraction by treating wavefronts as superpositions of secondary spherical waves emitted from an aperture.
• E. Huygens–Fresnel principle
  The Huygens–Fresnel principle is a fundamental concept in wave optics that explains how every point on a wavefront acts as a source of secondary wavelets whose interference determines the wave’s subsequent propagation and diffraction.
• F. None of above. chosen