A user with 23 edits. Account created on 24 October 2010.
Search for contributionsshowhide
⧼contribs-top⧽
⧼contribs-date⧽

16 May 2024

1 December 2023

  • 18:25 18:25, 1 December 2023 diff hist +37 m World lineNull 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)."

12 October 2023

24 June 2023

20 February 2022

15 January 2022

30 July 2019

25 July 2019

4 June 2019

  • 23:31 23:31, 4 June 2019 diff hist −41 Tidal forceRemoved 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.

8 September 2016

21 January 2015

6 November 2013

30 October 2013

A user with 23 edits. Account created on 24 October 2010.
Search for contributionsshowhide
⧼contribs-top⧽
⧼contribs-date⧽

16 May 2024

1 December 2023

  • 18:25 18:25, 1 December 2023 diff hist +37 m World lineNull 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)."

12 October 2023

24 June 2023

20 February 2022

15 January 2022

30 July 2019

25 July 2019

4 June 2019

  • 23:31 23:31, 4 June 2019 diff hist −41 Tidal forceRemoved 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.

8 September 2016

21 January 2015

6 November 2013

30 October 2013


Videos

Youtube | Vimeo | Bing

Websites

Google | Yahoo | Bing

Encyclopedia

Google | Yahoo | Bing

Facebook