Timelike vs Achronal - What's the difference?

timelike | achronal |

In physics|lang=en terms the difference between timelike and achronal

is that timelike is (physics) (of the interval between two events in spacetime ) having overlapping light cones, so that information can pass from one to the other, and one can be envisaged as a cause of the other while achronal is (physics) describing a set of points in a spacetime, no two of which have timelike separation.

As adjectives the difference between timelike and achronal

is that timelike is (mathematics|physics) of a four-vector in representing a point in spacetime, having a positive four-vector norm while achronal is (physics) describing a set of points in a spacetime, no two of which have timelike separation.

timelike

English

Alternative forms

* time-like

• (mathematics, physics) Of a four-vector in representing a point in spacetime, having a positive four-vector norm.
• (physics) (of the interval between two events in spacetime ) Having overlapping light cones, so that information can pass from one to the other, and one can be envisaged as a cause of the other.
• Derived terms

* timelike component * timelike congruence * timelike path * future directed timelike vector * past directed timelike vector * timelikeness * timelike vector field