User contributions for JFB80
A user with 1,168 edits. Account created on 22 August 2010.
29 July 2022
- 08:3208:32, 29 July 2022 diff hist +127 Talk:Friedmann–Lemaître–Robertson–Walker metric →How is a universal time defined?: Original Weyl reference added
16 July 2022
- 10:1610:16, 16 July 2022 diff hist +348 Talk:Friedmann–Lemaître–Robertson–Walker metric →How is a universal time defined?: Reply Tag: Reply
15 July 2022
- 12:2112:21, 15 July 2022 diff hist +18 Inertia The word 'perseveres' found in Motte-Cajories translation comes directly from Newton's Latin
10 July 2022
- 05:2705:27, 10 July 2022 diff hist +548 Talk:Friedmann–Lemaître–Robertson–Walker metric →How is a universal time defined?: Thank you for the explanation. Where is it in a book?
9 July 2022
- 09:3109:31, 9 July 2022 diff hist +292 Talk:Friedmann–Lemaître–Robertson–Walker metric →How is a universal time defined?
- 09:1309:13, 9 July 2022 diff hist +498 Talk:Friedmann–Lemaître–Robertson–Walker metric →How is a universal time defined?: new section Tag: New topic
8 June 2022
- 17:0817:08, 8 June 2022 diff hist +103 Relativistic Doppler effect →{{anchor|Motion along the line of sight}} Relativistic longitudinal Doppler effect: Formula is expressible by rapidity Tag: Reverted
6 June 2022
- 05:5405:54, 6 June 2022 diff hist +266 User:JFB80/sandbox No edit summary current
11 May 2022
- 07:3307:33, 11 May 2022 diff hist +19 Friedmann–Lemaître–Robertson–Walker metric A metric based on GR - not GR itself
- 07:2307:23, 11 May 2022
diff hist −89
Friedmann–Lemaître–Robertson–Walker metric
Undid revision 1087216470 by Ffffrr (talk)But it isn't - it uses an absolute time which is not done in GR
Undo
29 April 2022
- 17:5217:52, 29 April 2022 diff hist +290 Mileva Marić →Debate over collaboration: Stachel's remark easily explained since Maric had to give up scientific work. Tag: Reverted
23 April 2022
- 06:2406:24, 23 April 2022 diff hist +612 Talk:Newton's law of universal gravitation →Newton never claimed gravitation to be universal: new section Tag: Reverted
- 05:4405:44, 23 April 2022 diff hist −10 Philosophiæ Naturalis Principia Mathematica 'universal gravitation' - 'universal' deleted as Newton did not say that and did not assume it.
14 April 2022
- 16:1116:11, 14 April 2022 diff hist +34 Aleksandr Lyapunov →Work: "especially rotating fluid masses" added.
5 April 2022
- 16:5416:54, 5 April 2022 diff hist +31 Mileva Marić →Biography: '1901' changed to 'May 1901 on a short holiday in Italy'.
1 April 2022
- 16:1216:12, 1 April 2022 diff hist +72 Mikhail Botvinnik →Electrical engineering: Addition to ref for 1964 book.
- 06:5106:51, 1 April 2022 diff hist +192 Mikhail Botvinnik →Electrical engineering: Added his book on Asynchronized Synchronous Machines.
17 March 2022
- 19:3419:34, 17 March 2022 diff hist +442 Talk:Velocity-addition formula /* Velocity composition not linear "Einstein addition" omits Thomas rotation.
28 February 2022
- 18:4518:45, 28 February 2022 diff hist +8 m Constantin Carathéodory →Books: Functions of a Complex Variable, Eng. trans. 3rd ed 1958
27 February 2022
- 16:1616:16, 27 February 2022 diff hist +201 Talk:Velocity-addition formula →Velocity composition not linear: Glad you agree.
24 February 2022
- 05:3505:35, 24 February 2022 diff hist +432 User talk:JFB80 →Galilean *invariance*: Newton's clearer version in Corollary V to Laws of motion.
23 February 2022
- 07:3907:39, 23 February 2022 diff hist +677 User talk:JFB80 →Galilean *invariance*: Galileo may have made an earlier more definite statement. Newton was more clear on the relativity principle.
22 February 2022
- 15:3615:36, 22 February 2022 diff hist +440 User talk:JFB80 →Galilean *invariance*: `Ok I agree the term is generally used. But source reference still needed. It occurs also with Newton.
- 11:0311:03, 22 February 2022 diff hist +434 User talk:JFB80 →Galilean *invariance*: Use of term needs a correct source.
20 February 2022
- 05:4405:44, 20 February 2022 diff hist +30 Inertia Added 'in Eb
- 05:2605:26, 20 February 2022
diff hist −83
Inertia
Undid revision 1072860212 by Vbrm (talk)Name a reliable source for "Galilean equivalence" I have never seen it.
Undo
19 February 2022
- 13:0413:04, 19 February 2022 diff hist +261 Talk:Velocity-addition formula →Velocity composition not linear: Product of boost = boost x rotation matrix is similar
18 February 2022
- 16:4816:48, 18 February 2022 diff hist +602 Talk:Velocity-addition formula →Velocity composition not linear
17 February 2022
- 17:0917:09, 17 February 2022 diff hist +606 Talk:Velocity-addition formula →Velocity composition not linear: Oplus formula gives part of the answer.
15 February 2022
- 07:4707:47, 15 February 2022 diff hist +735 Talk:Velocity-addition formula →Velocity composition not linear: Formula only linear when v/c->o. It does not represent relativistic velocity addition because of Thomas rotation.
- 06:5306:53, 15 February 2022
diff hist +34
Mileva Marić
Undid revision 1071382531 by 94.189.200.46 (talk)The edit was correct. Your anonymous mobile edit hides its meaning.
Undo
31 January 2022
- 10:2910:29, 31 January 2022 diff hist +93 Oliver Heaviside →Publications: Original reference added to "A gravitational and electromagnetic analogy"
30 January 2022
- 07:3807:38, 30 January 2022 diff hist −49 Oliver Heaviside →Publications: URL incorrectly named Tag: Reverted
13 January 2022
- 19:1919:19, 13 January 2022 diff hist +140 Galileo Galilei →General sources: Bertold Brecht: The Life of Galileo
9 January 2022
- 07:0407:04, 9 January 2022 diff hist +368 Talk:Galileo Galilei →Was Galileo allowed to publish after his trial?: new section
8 January 2022
- 16:2116:21, 8 January 2022 diff hist +155 Talk:Lyapunov stability →Lyapunov stability in the 3 body problem: Why edit on a subject you are not familiar with?
- 16:1216:12, 8 January 2022 diff hist −31 Lyapunov stability Lyapunov stability theory not applicable to conservative dynamic systems.
7 January 2022
- 14:3314:33, 7 January 2022 diff hist +718 Talk:Lyapunov stability →Lyapunov stability in the 3 body problem: new section
6 January 2022
- 17:4517:45, 6 January 2022 diff hist −186 Lyapunov stability 3-body Lyapunov 3-body stability section deleted. No such thing! If you disagree give references in accordance with Wiki policy Tag: Reverted
2 January 2022
- 20:3620:36, 2 January 2022 diff hist +105 Wigner rotation The rotation was discovered Silberstein in 1914.
12 December 2021
- 16:3916:39, 12 December 2021 diff hist +90 Wigner rotation →References: Silberstein: Theory of Relativity 1914 added
10 December 2021
- 16:5716:57, 10 December 2021
diff hist +64
Constantin Carathéodory
Undid revision 1059225695 by Marcocapelle (talk) Why delete? It was an important period when Caratheodory and Einstein were both editors.
UndoReverted
29 November 2021
- 12:3212:32, 29 November 2021
diff hist −7
Beltrami–Klein model
Undid revision as there was not a spelling mistake, just British instead of American English- is it allowed? Details 1057709454 by 23.84.147.232 (talk)
Undo
27 November 2021
- 19:5719:57, 27 November 2021 diff hist +641 Talk:Inertia →Aristotle: Newton's Law given in a political treatise of 1610
- 18:3818:38, 27 November 2021 diff hist +43 Constantin Carathéodory →Books: A URL for Georgiadou's book
23 October 2021
- 20:4620:46, 23 October 2021 diff hist +378 Talk:Wigner rotation →History: Correct reference quoted. Wigner also quotes Silberstein
7 September 2021
- 18:0018:00, 7 September 2021 diff hist +8 Penelope Delta →Marriage: his wife Sofia's father was Alexandra Karatheodori Pasha.
6 September 2021
- 21:0921:09, 6 September 2021 diff hist +66 Penelope Delta →Marriage: Delta was related to the mathematician Carathéodory through his wife Sofia.
5 June 2021
- 09:5709:57, 5 June 2021 diff hist −1 Penelope Delta →Marriage: "was related to" instead of "was a nephew of" which was not true..
16 April 2021
- 06:1706:17, 16 April 2021 diff hist +515 Talk:Wigner rotation →Description Wigner rotation incorrect: Thomas was quite aware of the general result in his 1927 paper.
