Quote: events outside of the light cone from event P have a time-like relation to P; those inside have a space-like relation

Quotation

If P is a point (event) represented in the four-dimensional space of the x_1, x_2, x_3, l then all "points" which can be connected to P by means of a light signal lie upon the cone s^2=0. [Points P' inside the cone have a time-like relation with P, points outside of the cone have a space-like relation].   Google-1   Google-2

Published before 1923

Related Topics

Topic: special relativity (73 items)
Topic: time (48 items)