In physicslang=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 (mathematicsphysics) of a fourvector in representing a point in spacetime, having a positive fourvector norm while
achronal is (physics) describing a set of points in a spacetime, no two of which have timelike separation.
timelike English
Alternative forms
* timelike
Adjective
( en adjective)
(mathematics, physics) Of a fourvector in representing a point in spacetime, having a positive fourvector 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 