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  2. Chirality - Wikipedia

    en.wikipedia.org/wiki/Chirality

    In particular for a massless particle the helicity is the same as the chirality while for an antiparticle they have opposite sign. The handedness in both chirality and helicity relate to the rotation of a particle while it proceeds in linear motion with reference to the human hands. The thumb of the hand points towards the direction of linear ...

  3. Chirality (physics) - Wikipedia

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

    A chiral phenomenon is one that is not identical to its mirror image (see the article on mathematical chirality).The spin of a particle may be used to define a handedness, or helicity, for that particle, which, in the case of a massless particle, is the same as chirality.

  4. Axial chirality - Wikipedia

    en.wikipedia.org/wiki/Axial_chirality

    The chirality of a molecule that has a helical, propeller, or screw-shaped geometry is called helicity [5] or helical chirality. [6] [7] The screw axis or the D n, or C n principle symmetry axis is considered to be the axis of chirality. Some sources consider helical chirality to be a type of axial chirality, [7] and some do not.

  5. Helicity (particle physics) - Wikipedia

    en.wikipedia.org/wiki/Helicity_(particle_physics)

    By contrast, for massive particles, distinct chirality states (e.g., as occur in the weak interaction charges) have both positive and negative helicity components, in ratios proportional to the mass of the particle. A treatment of the helicity of gravitational waves can be found in Weinberg. [5]

  6. Zilch (electromagnetism) - Wikipedia

    en.wikipedia.org/wiki/Zilch_(electromagnetism)

    The quantity is the spatial density of optical chirality, while is the optical chirality flux. [2] Generalizing the aforementioned differential conservation law for Z 0 {\displaystyle Z^{0}} , Lipkin found other nine conservation laws, all unrelated to the stress–energy tensor .

  7. Helicity - Wikipedia

    en.wikipedia.org/wiki/Helicity

    Helicity (particle physics), the projection of the spin onto the direction of momentum; Magnetic helicity, the extent to which a magnetic field "wraps around itself" Circular dichroism, the differential absorption of left and right circularly polarized light; A form of axial chirality; A former name for inherent chirality

  8. Helix - Wikipedia

    en.wikipedia.org/wiki/Helix

    Handedness (or chirality) is a property of the helix, not of the perspective: a right-handed helix cannot be turned to look like a left-handed one unless it is viewed in a mirror, and vice versa. Two types of helix shown in comparison. This shows the two chiralities of helices. One is left-handed and the other is right-handed.

  9. Optical properties - Wikipedia

    en.wikipedia.org/wiki/Optical_properties

    The optical properties of a material define how it interacts with light. The optical properties of matter are studied in optical physics (a subfield of optics ) and applied in materials science . The optical properties of matter include: