This file is from Wikimedia Commons and may be used by other projects.
The description on its file description page there is shown below.
Summary
DescriptionTravelerKinematic3.jpg
English: Schematic of the (3+1)D traveler kinematic for describing changes in map-position x regardless of speed[1] using the traveler's perspective on time τ, velocity dx/dτ, and proper-acceleration α.
The method outlined here should in principle work with other metric equations as well.
Traveler kinematics in a Schwarzschild shell-frame.
Footnotes
↑ abP. Fraundorf (2012) "A traveler-centered intro to kinematics", arxiv:1206.2877 [physics.pop-ph].
↑P. Fraundorf (1995) "Three self-consistent kinematics in (1+1)D special relativity", arXiv:gr-qc/9512012.
↑Galileo Galilei (1632/1953/1962/1967) Dialogue Concerning the Two Chief World Systems (Dialogo sopra i due massimi sistemi del mondo) translated by Stillman Drake (U. California Press, Berkeley CA)
Licensing
I, the copyright holder of this work, hereby publish it under the following license:
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.