In physics terms the difference between timelike and achronal
is that timelike is (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 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 of a four-vector in representing a point in spacetime, having a positive four-vector norm while achronal is describing a set of points in a spacetime, no two of which have timelike separation.
timelike
English
Alternative forms
* time-like
Adjective
(
en adjective)
(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
See also
* lightlike
* spacelike achronal
English
Adjective
(-)
(physics) Describing a set of points in a spacetime, no two of which have timelike separation 
