helicity


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he·lic·i·ty

 (hə-lĭs′ĭ-tē, hē′)
n. pl. he·lic·i·ties Physics
1. 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.
2. An instance of such projection.

helicity

(hɪˈlɪsɪtɪ)
n, pl -ties
(General Physics) physics the projection of the spin of an elementary particle on the direction of propagation
[C20: from helix + -ity]
Translations
helicidad
kierteisyys
hélicité
elicità
References in periodicals archive ?
The Helicity by Whitesky Aviation gives its own color in spending holidays.
TC tornadoes tend to be spawned from minisupercells in the right-front (motion relative) or northeastern (Earth relative) quadrant of their parent TCs (Smith 1965; Novlan and Gray 1974; Gentry 1983; Weiss 1987; McCaul 1991) during (or after) the TCs' water-to-land transition, probably resulting from the enhancement of vertical wind shear and helicity caused by the increased surface friction (Novlan and Gray 1974; Gentry 1983) or the interaction between TCs and baroclinic westerlies (McCaul 1991).
Today we usually assign these two states as two eigen states of helicity p[sigma]/p belonging to eigen values [+ or -] 1, but we can assign two arbitrary, mutually orthogonal states instead.
To understand the increased frequency in tornado outbreaks, the researchers looked at two factors: convective available potential energy, or CAPE, and storm relative helicity, which is a measure of vertical wind shear.
Titius-Bode and the helicity connection: a quantized field theory of protostar formation.
Helicity Technologies, an American company founded in 2013, has developed a superhydrophobic coating that prevents icing.
Russian physicists Zel'dovich (1914-87) and Ruzmaikin discuss some topics in hydromagnetic dynamo theory in the astrophysical context of large magnetic Reynolds number, define criteria for field generation in a state of near-complete freezing-in, and offer an account of certain qualitative aspects of a turbulent dynamo operating through non-uniform rotation of a conducting medium subject to random motions with helicity.
Normalization is typically performed to remove fluorescence differences between samples and display the data in terms of percent helicity.
Stability of dystrophin STR fragments in relation to junction helicity.
Carbon Nanotube sheets have various structures, differing in length, thickness, and in the type of helicity and number of layers.
DNA super helicity affects the initiation of DNA replication and transcription of many genes.