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  2. Plane of polarization - Wikipedia

    en.wikipedia.org/wiki/Plane_of_polarization

    [1] [11] Hence D, E, the wave-normal direction, and the ray direction are all in the same plane, and it is all the more natural to define that plane as the "plane of polarization". This "natural" definition, however, depends on the theory of EM waves developed by James Clerk Maxwell in the 1860s — whereas the word polarization was coined ...

  3. 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 ...

  4. Optical rotation - Wikipedia

    en.wikipedia.org/wiki/Optical_rotation

    A solution of this compound derived from living things (to be specific, wine lees) rotates the plane of polarization of light passing through it, but tartaric acid derived by chemical synthesis has no such effect, even though its reactions are identical and its elemental composition is the same. Pasteur noticed that crystals of this compound ...

  5. Feynman diagram - Wikipedia

    en.wikipedia.org/wiki/Feynman_diagram

    The rules for spin-⁠ 1 / 2 ⁠ Dirac particles are as follows: The propagator is the inverse of the Dirac operator, the lines have arrows just as for a complex scalar field, and the diagram acquires an overall factor of −1 for each closed Fermi loop. If there are an odd number of Fermi loops, the diagram changes sign.

  6. Polarization (waves) - Wikipedia

    en.wikipedia.org/wiki/Polarization_(waves)

    P-polarization is commonly referred to as transverse-magnetic (TM), and has also been termed pi-polarized or π-polarized, or tangential plane polarized. S-polarization is also called transverse-electric (TE), as well as sigma-polarized or σ-polarized, or sagittal plane polarized.

  7. Polarimeter - Wikipedia

    en.wikipedia.org/wiki/Polarimeter

    The plane of polarization is turned by optically active compounds. According to the direction in which the light is rotated, the enantiomer is referred to as dextro-rotatory or levo-rotatory. The optical activity of enantiomers is additive. If different enantiomers exist together in one solution, their optical activity adds up.

  8. Huygens principle of double refraction - Wikipedia

    en.wikipedia.org/wiki/Huygens_principle_of...

    The first is plane or linear polarization, the second is elliptical polarization, and the third is circular polarization. The light may also be partially polarized in addition to these. The polarization of light cannot be determined by the human eye on its own. However, some animals and insects have a vision that is sensitive to polarization. [1]

  9. Stereoisomerism - Wikipedia

    en.wikipedia.org/wiki/Stereoisomerism

    Two kinds of stereoisomers. In stereochemistry, stereoisomerism, or spatial isomerism, is a form of isomerism in which molecules have the same molecular formula and sequence of bonded atoms (constitution), but differ in the three-dimensional orientations of their atoms in space.