Chronological Order

Tampan, Paminggir people. Lampung region of Sumatra, circa 1900, 49 x 53 cm. From the library of Darwin Sjamsudin, Jakarta. Photograph by D Dunlop. |

Consider a particle P that is described by the chain of events

$\Psi ^{\sf{P}} = \left( \sf{P}_{1} , \sf{P}_{2} \: \ldots \: \sf{P}_{\it{k}} \: \ldots \right)$

where the phase of events is given by

$\delta _{\theta} \, \left( \sf{P}_{ \it{k}} \right) = (-1)^{\it{k}} = \pm1$

so that $\delta _{\theta}$ alternates back and forth between plus and minus one for consecutive events along the chain. Definition: if a chain of events like this is also in historical order, then we say it is in **chronological** order.

Related WikiMechanics articles.

Summary |

Adjective | Definition | |

Chronological Order | $\delta _{\theta} \, \left( \sf{P}_{ \it{k}} \right) = (-1)^{\it{k}} = \pm1$ | 6-24 |

page revision: 140, last edited: 08 Oct 2017 13:12