Light_cone.svg
Summary
Description Light cone.svg | Illustration of a light cone , based on Image:Light cone.png |
Date | |
Source | Own work |
Author | Sakurambo |
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The interval AB in the diagram to the right is 'time-like'. I.e. there is a frame of reference in which event A and event B occur at the same location in space, separated only by occurring at different times. If A precedes B in that frame, then A precedes B in all frames. It is hypothetically possible for matter (or information) to travel from A to B, so there can be a causal relationship (with A the cause and B the effect).
The interval AC in the diagram is 'space-like'. I.e. there is a frame of reference in which event A and event C occur simultaneously, separated only in space. However there are also frames in which A precedes C (as shown) and frames in which C precedes A. Barring some way of traveling faster than light, it is not possible for any matter (or information) to travel from A to C or from C to A. Thus there is no causal connection between A and C.
Licensing
Public domain Public domain false false |
This work has been released into the
public domain
by its author,
I,
Sakurambo
. This applies worldwide.
In some countries this may not be legally possible; if so: I, Sakurambo grants anyone the right to use this work for any purpose , without any conditions, unless such conditions are required by law. |
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