Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun The projection of a particle's spin vector in the direction of its momentum vector, being positive if it points in the same direction, and negative if it points in the opposite direction. Helicity is the chirality of the particle's spin.
  • noun An instance of such projection.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun The quality of being helical.
  • noun physics The quantized spin component of a moving particle

Etymologies

Sorry, no etymologies found.

Examples

  • Also gravity waves have to directions of polarization, instead of one for EM waves, which is tied to something called helicity which is 2.

    A Dark, Misleading Force

  • In section 33.8, Penrose brings in "Massless fields of mixed helicity-such as a plane-polarized photon, which is the sum of a right-handed and left-handed part".

    Are Changes Brewing and How Does the Mind Fit In?

  • The photon has a helicity or spin, momentum and energy.

    Does Space Expand?

  • The chiral helicity of the films may be useful for electromagnetic and optical applications.

    Hideki Shirakawa - Autobiography

  • The other rules may be briefly mentioned here: the weak isospin rule, the strong (color) charge rule, the mass rule, the equivalence rule, the antiparticle rule, the helicity rule and the

    Scientific Blogging

  • He recalls Boris 'second helicity supertrace Omega, talks about walls of marginal stability and

    The Reference Frame

  • Dixon found some new structures in the helicity formalism.

    The Reference Frame

  • The laser pulses were polarized at right angles to each other, so they created an interference grating in which the light intensity was constant but its helicity varied.

    EurekAlert! - Breaking News

  • The laser pulses were polarized at right angles to each other, so they created an interference grating in which the light intensity was constant but its helicity varied.

    Nano Tech Wire

  • ArntbHLH-C / EBP shows 49\% helicity, as measured at 222 nm.

    PLoS ONE Alerts: New Articles

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