Banner: Helicity

Adjective | Definition | |

Helicity | $\delta _{z} \equiv \begin{cases} +1 \ \ &\sf{\text{if}} \ \ &\mathrm{\Delta}n^{\mathsf{U}} > \mathrm{\Delta}n^{\mathsf{D}} \\ \ \ 0 \ \ &\sf{\text{if}} \ \ &\mathrm{\Delta}n^{\mathsf{U}} \ \sf{=} \ \, \mathrm{\Delta}n^{\mathsf{D}} \\ -1 \ \ &\sf{\text{if}} \ \ &\mathrm{\Delta}n^{\mathsf{U}} < \mathrm{\Delta}n^{\mathsf{D}} \end{cases}$ | X-Y |

page revision: 11, last edited: 17 Oct 2015 03:25