18:2518:25, 1 December 2023diffhist+37
m
World line
Null lines are also world lines. Null lines are also called worldlines later in this same article. "World lines of a particle and an observer may be interconnected with the world line of a photon (the path of light) and form a diagram depicting the emission of a photon by a particle that is subsequently observed by the observer (or absorbed by another particle)."
17:4817:48, 20 February 2022diffhist+91
N
User:Theophilus71
←Created page with 'Retired Ph.D. physicist with specialization in general relativity and quantum field theory.'current
03:2303:23, 25 July 2019diffhist−160
Gravitational time dilation
→Important features of gravitational time dilation: Deletion of the ambiguous sentence: "An exception is the center of a concentric distribution of matter, where there is no accelerated reference frame, yet clocks are still supposed to tick slowly. " This statement should be developed mathematically to support the statement rather than the "supposed to" assertion.. Time dilation is always relative to two frames of reference and the deleted remark does not make the reference frames clear.
4 June 2019
23:3123:31, 4 June 2019diffhist−41
Tidal force
Removed claim of "apparent force." Per the equivalence principle the local (at a point) gravitational field can be removed by free fall. But the gradient or tidal effects cannot be so removed. That insight leads to general relativity. (Einstein's elevator gedanken experiment).The tidal force is described by the Riemann tensor which is central to GR and cannot be transformed away. As such it is not apparent.
17:3417:34, 21 January 2015diffhist+28
Presuppositional apologetics
Removed attribution of platonic epistemology to Clark. Clark rejected platonic epistemology, cf. "The Philosophy of Gordon H. Clark" (1968), p. 29: "Platonism therefore cannot be accepted as the solution..."
18:2518:25, 1 December 2023diffhist+37
m
World line
Null lines are also world lines. Null lines are also called worldlines later in this same article. "World lines of a particle and an observer may be interconnected with the world line of a photon (the path of light) and form a diagram depicting the emission of a photon by a particle that is subsequently observed by the observer (or absorbed by another particle)."
17:4817:48, 20 February 2022diffhist+91
N
User:Theophilus71
←Created page with 'Retired Ph.D. physicist with specialization in general relativity and quantum field theory.'current
03:2303:23, 25 July 2019diffhist−160
Gravitational time dilation
→Important features of gravitational time dilation: Deletion of the ambiguous sentence: "An exception is the center of a concentric distribution of matter, where there is no accelerated reference frame, yet clocks are still supposed to tick slowly. " This statement should be developed mathematically to support the statement rather than the "supposed to" assertion.. Time dilation is always relative to two frames of reference and the deleted remark does not make the reference frames clear.
4 June 2019
23:3123:31, 4 June 2019diffhist−41
Tidal force
Removed claim of "apparent force." Per the equivalence principle the local (at a point) gravitational field can be removed by free fall. But the gradient or tidal effects cannot be so removed. That insight leads to general relativity. (Einstein's elevator gedanken experiment).The tidal force is described by the Riemann tensor which is central to GR and cannot be transformed away. As such it is not apparent.
17:3417:34, 21 January 2015diffhist+28
Presuppositional apologetics
Removed attribution of platonic epistemology to Clark. Clark rejected platonic epistemology, cf. "The Philosophy of Gordon H. Clark" (1968), p. 29: "Platonism therefore cannot be accepted as the solution..."