"Klein-Nishina formula" meaning in English

{
  "etymology_text": "Named after Oskar Klein and Yoshio Nishina who derived the equation in 1928.",
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      "glosses": [
        "A formula for the differential cross section of photons scattered from a single free electron, calculated in the lowest order of quantum electrodynamics: (dσ)/(dΩ)=1/2r_e²(λ/(λ'))²[λ/(λ')+(λ')/λ- sin ²(θ)], where r_e is the classical electron radius, λ/λ' is the ratio of the wavelengths of the incident and scattered photons, and θ is the scattering angle (0 for an undeflected photon)."
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          "scatter",
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          "electron",
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          "quantum electrodynamics",
          "quantum electrodynamics"
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          "wavelength",
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          "incident",
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        "(particle physics) A formula for the differential cross section of photons scattered from a single free electron, calculated in the lowest order of quantum electrodynamics: (dσ)/(dΩ)=1/2r_e²(λ/(λ'))²[λ/(λ')+(λ')/λ- sin ²(θ)], where r_e is the classical electron radius, λ/λ' is the ratio of the wavelengths of the incident and scattered photons, and θ is the scattering angle (0 for an undeflected photon)."
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        "particle"
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      "topics": [
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      "wikipedia": [
        "Oskar Klein",
        "Yoshio Nishina"
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  "etymology_text": "Named after Oskar Klein and Yoshio Nishina who derived the equation in 1928.",
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        "A formula for the differential cross section of photons scattered from a single free electron, calculated in the lowest order of quantum electrodynamics: (dσ)/(dΩ)=1/2r_e²(λ/(λ'))²[λ/(λ')+(λ')/λ- sin ²(θ)], where r_e is the classical electron radius, λ/λ' is the ratio of the wavelengths of the incident and scattered photons, and θ is the scattering angle (0 for an undeflected photon)."
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      "raw_glosses": [
        "(particle physics) A formula for the differential cross section of photons scattered from a single free electron, calculated in the lowest order of quantum electrodynamics: (dσ)/(dΩ)=1/2r_e²(λ/(λ'))²[λ/(λ')+(λ')/λ- sin ²(θ)], where r_e is the classical electron radius, λ/λ' is the ratio of the wavelengths of the incident and scattered photons, and θ is the scattering angle (0 for an undeflected photon)."
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        "Oskar Klein",
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  "word": "Klein-Nishina formula"
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