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  2. Aperture-to-medium coupling loss - Wikipedia

    en.wikipedia.org/wiki/Aperture-to-medium...

    Note 1: Aperture-to-medium coupling loss is related to the ratio of the scatter angle to the antenna beamwidth. Note 2: The "very large antennas" are referred to in wavelengths; thus, this loss can apply to line-of-sight systems also.

  3. Cross section (physics) - Wikipedia

    en.wikipedia.org/wiki/Cross_section_(physics)

    The differential angular range of the scattered particle at angle θ is the solid angle element dΩ = sin θ dθ dφ. The differential cross section is the quotient of these quantities, ⁠ dσ / dΩ ⁠. It is a function of the scattering angle (and therefore also the impact parameter), plus other observables such as the momentum of the ...

  4. Radar cross section - Wikipedia

    en.wikipedia.org/wiki/Radar_cross_section

    the incident angle (angle at which the radar beam hits a particular portion of the target, which depends upon the shape of the target and its orientation to the radar source); the reflected angle (angle at which the reflected beam leaves the part of the target hit; it depends upon incident angle);

  5. Mie scattering - Wikipedia

    en.wikipedia.org/wiki/Mie_scattering

    Online Mie solution calculator is available, with documentation in German and English. Online Mie scattering calculator produces beautiful graphs over a range of parameters. phpMie Online Mie scattering calculator written on PHP. Mie resonance mediated light diffusion and random lasing. Mie solution for spherical particles.

  6. Klein–Nishina formula - Wikipedia

    en.wikipedia.org/wiki/Klein–Nishina_formula

    The formula describes both the Thomson scattering of low energy photons (e.g. visible light) and the Compton scattering of high energy photons (e.g. x-rays and gamma-rays), showing that the total cross section and expected deflection angle decrease with increasing photon energy.

  7. Ternary plot - Wikipedia

    en.wikipedia.org/wiki/Ternary_plot

    A ternary flammability diagram, showing which mixtures of methane, oxygen gas, and inert nitrogen gas will burn. A ternary plot, ternary graph, triangle plot, simplex plot, or Gibbs triangle is a barycentric plot on three variables which sum to a constant. [1]

  8. Scattering rate - Wikipedia

    en.wikipedia.org/wiki/Scattering_rate

    A formula may be derived mathematically for the rate of scattering when a beam of electrons passes through a material. The interaction picture Define ...

  9. Spherical coordinate system - Wikipedia

    en.wikipedia.org/wiki/Spherical_coordinate_system

    The user may choose to replace the inclination angle by its complement, the elevation angle (or altitude angle), measured upward between the reference plane and the radial line—i.e., from the reference plane upward (towards to the positive z-axis) to the radial line. The depression angle is the negative of the elevation angle.