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  2. Hamiltonian optics - Wikipedia

    en.wikipedia.org/wiki/Hamiltonian_optics

    The general results presented above for Hamilton's principle can be applied to optics using the Lagrangian defined in Fermat's principle.The Euler-Lagrange equations with parameter σ =x 3 and N=2 applied to Fermat's principle result in ˙ = with k = 1, 2 and where L is the optical Lagrangian and ˙ = /.

  3. Hamilton's principle - Wikipedia

    en.wikipedia.org/wiki/Hamilton's_principle

    Hamilton's principle states that the true evolution q(t) of a system described by N generalized coordinates q = (q 1, q 2, ..., q N) between two specified states q 1 = q(t 1) and q 2 = q(t 2) at two specified times t 1 and t 2 is a stationary point (a point where the variation is zero) of the action functional [] = ((), ˙ (),) where (, ˙,) is the Lagrangian function for the system.

  4. Multiangle light scattering - Wikipedia

    en.wikipedia.org/wiki/Multiangle_light_scattering

    By utilizing MALS in conjunction with a concentration detector as described above, one create a log-log plot of the root-mean-square radius vs molar mass. The slope of this plot yields the branching ratio, g. [28] In addition to branching, the log-log plot of size vs. molar mass indicates the shape or conformation of a macromolecule.

  5. Absorption (electromagnetic radiation) - Wikipedia

    en.wikipedia.org/wiki/Absorption_(electromagnetic...

    In chemistry and materials science, different materials and molecules absorb radiation to different extents at different frequencies, which allows for material identification. In optics , sunglasses, colored filters, dyes, and other such materials are designed specifically with respect to which visible wavelengths they absorb, and in what ...

  6. List of scientific laws named after people - Wikipedia

    en.wikipedia.org/wiki/List_of_scientific_laws...

    Chemistry: Michael Faraday: Faxén's law: Fluid dynamics: Hilding Faxén: Fermat's principle Fermat's Last Theorem Fermat's little theorem: Optics Number theory Number theory: Pierre de Fermat: Fermi paradox Fermi's golden rule Fermi acceleration Fermi hole Fermionic field Fermi level See also: List of things named after Enrico Fermi: Cosmology ...

  7. Hamilton–Jacobi equation - Wikipedia

    en.wikipedia.org/wiki/Hamilton–Jacobi_equation

    [1] [2] The qualitative form of this connection is called Hamilton's optico-mechanical analogy. In mathematics, the Hamilton–Jacobi equation is a necessary condition describing extremal geometry in generalizations of problems from the calculus of variations .

  8. List of optics equations - Wikipedia

    en.wikipedia.org/wiki/List_of_optics_equations

    Visulization of flux through differential area and solid angle. As always ^ is the unit normal to the incident surface A, = ^, and ^ is a unit vector in the direction of incident flux on the area element, θ is the angle between them.

  9. Specific rotation - Wikipedia

    en.wikipedia.org/wiki/Specific_rotation

    The CRC Handbook of Chemistry and Physics defines specific rotation as: For an optically active substance, defined by [α] θ λ = α/γl, where α is the angle through which plane polarized light is rotated by a solution of mass concentration γ and path length l. Here θ is the Celsius temperature and λ the wavelength of the light at which ...