Spacetime Diagram - A diagram showing one spatial coordinate against time, in which the paths of bodies and beams of light can be plotted ...
A spacetime diagram exhibiting the properties of the Schwarzschild metric by eliminating the formal singularity that appears at the Schwarzschild radius in the form in which the metric is usually written.
(b) A cone representing the transmission, at the speed of light, of an event's existence on a spacetime diagram. [C97] ...
The animation at right shows the Alfred and Brian spacetime diagram with k = 2. Both Alfred and Brian send out pulses at t=1 on their own clocks, and both receive the echo back at t=4.
* A graph known as a "spacetime diagram" or "Minkowski diagram" -- after Hermann Minkowski (1864:1909), ...
Causality describes the relationship between causes and effects, is fundamental to all natural science, especially physics, and has a basis in logic....
in every frame. An illustration of such a scenario using spacetime diagrams
Minkowski diagram ...
using so-called Penrose-Carter diagrams in which infinitely large regions of space and infinite time intervals are shrunk ("compactified") so as to fit onto a finite map, while light still travels along diagonals as in standard spacetime diagrams.
 See also: Field, Second, Earth, Gravitation, Planet
  
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