Relativity

1974 topics in this forum

1. What is Space made of? 1 2 3 4 15

   By Mordred, May 31, 2015
   • 352 replies
   • 72.4k views
   • 
   • crazzy__physicist
   • December 20, 2023

2. Pedestrian crossing the street

   By jv1, Wednesday at 12:08 PM
   • 5 replies
   • 157 views
   • 
   • jv1
   • 2 hours ago

3. Combined speeds at relativistic velocities 1 2

   By Moontanman, May 1
   • 32 replies
   • 610 views
   • 
   • Ghideon
   • May 2

4. Twin paradox with a twist

   By DanMP, April 25
   • 19 replies
   • 428 views
   • 
   • DanMP
   • May 2

5. The equivalence principle and blueshift

   By DanMP, April 25
   • 12 replies
   • 323 views
   • 
   • Markus Hanke
   • April 30

6. How does a physical system evolve under acceleration?

   By geordief, April 28
   • 12 replies
   • 287 views
   • 
   • swansont
   • April 29

7. Is rapidity a measure of acceleration?

   By md65536, April 19
   • 18 replies
   • 453 views
   • 
   • KJW
   • April 22

8. Calculating time for light clock time dilation ?

   By jv1, April 19
   • 13 replies
   • 391 views
   • 
   • swansont
   • April 20

9. The spacetime interval versus a chain of causative events

   By geordief, April 8
   • 21 replies
   • 682 views
   • 
   • Halc
   • April 16

10. Length contraction in a doughnut shaped universe.

    By grayson, April 1
    • 3 replies
    • 288 views
    • 
    • md65536
    • April 6

11. Is the spacetime model necessary between frames that are relatively stationary?

    By geordief, March 28
    • 4 replies
    • 272 views
    • 
    • swansont
    • March 28

12. A different way of looking at the trampoline analogy

    By geordief, March 17
    • 24 replies
    • 746 views
    • 
    • Mordred
    • March 23

13. Material Falling Onto Neutron Stars

    By RyanJ, March 14
    • 6 replies
    • 324 views
    • 
    • RyanJ
    • March 16

14. Do inspiral charged black hole pairs radiate light? 1 2

    By md65536, February 18
    • 42 replies
    • 1.7k views
    • 
    • md65536
    • March 7

15. Light orbiting a black hole

    By md65536, February 18
    • 10 replies
    • 578 views
    • 
    • md65536
    • February 24

16. Curiosity on the relationship between matter and energy

    By Silverstreak, February 18
    • 11 replies
    • 644 views
    • 
    • Eise
    • February 19

17. Does the time exist? 1 2 3 4 7

    By Heis3nberg, July 2, 2021
    • 158 replies
    • 11.7k views
    • 
    • dimreepr
    • January 22

18. Gravitational waves (split from 12 h Tides (inertia))

    By Capiert, January 14
    • 2 replies
    • 192 views
    • 
    • swansont
    • January 14

19. Neutral simultaneity for two frames. 1 2 3 4 8

    By DimaMazin, December 9, 2022
    • 197 replies
    • 10k views
    • 
    • Bufofrog
    • January 12

20. Time travel is not logically possible

    By Boltzmannbrain, January 4
    • 20 replies
    • 1.3k views
    • 
    • Boltzmannbrain
    • January 6

21. Do gravitational waves distort time?

    By Danijel Gorupec, December 26, 2023
    • 10 replies
    • 619 views
    • 
    • Genady
    • January 2

22. How can a tensor describe curvature?

    By grayson, December 20, 2023
    • 7 replies
    • 529 views
    • 
    • Sensei
    • December 21, 2023

23. About the Einstein tensor.

    By grayson, December 16, 2023
    • 18 replies
    • 1k views
    • 
    • Markus Hanke
    • December 20, 2023

24. Constant v Invariant

    By studiot, November 7, 2023
    • 14 replies
    • 870 views
    • 
    • studiot
    • November 28, 2023

25. Analogies for relativistic physics 1 2 3 4 5

    By Killtech, November 4, 2023
    • 116 replies
    • 5.4k views
    • 
    • joigus
    • November 27, 2023