Relativity

1991 topics in this forum

1. Why "even light"? 1 2 3 4 6

   By Genady, July 31, 2023
   • 132 replies
   • 7.7k views
   • 
   • studiot
   • August 13, 2023

2. If different elementary particles are at highly different relative velocities, how can it be said that an atom or larger mass is in its own frame?

   By CrypticFish, July 10, 2023
   • 14 replies
   • 1.4k views
   • 
   • exchemist
   • July 10, 2023

3. Need help from any math people here with special relativity.

   By Michael_123_, July 3, 2023
   • 1 reply
   • 631 views
   • 
   • Genady
   • July 4, 2023

4. Gravitational waves (split from Wave-Particle Duality)

   By MJ kihara, June 27, 2023
   • 11 replies
   • 1.3k views
   • 
   • swansont
   • June 30, 2023

5. Spacetime intervals

   By geordief, June 16, 2023
   • 8 replies
   • 1k views
   • 
   • md65536
   • June 17, 2023

6. Was there a maximum speed during Inflation? 1 2

   By geordief, May 8, 2023
   • 31 replies
   • 2.4k views
   • 
   • Mordred
   • May 11, 2023

7. The nature of space and time

   By Sarki, May 6, 2023
   • 2 replies
   • 823 views
   • 
   • swansont
   • May 6, 2023

8. ... paradox help needed ...

   By zetetic56, April 25, 2023
   • 10 replies
   • 1.4k views
   • 
   • zetetic56
   • April 26, 2023

9. Paradox? (split from Is FTL actually possible?) 1 2 3

   By Genady, April 8, 2023
   • 64 replies
   • 4.9k views
   • 
   • studiot
   • April 12, 2023

10. If the Earth was made of gruyere cheese...

    By geordief, March 27, 2023
    • 4 replies
    • 779 views
    • 
    • Markus Hanke
    • March 28, 2023

11. Gravitational waves inside the Earth(or similar object) 1 2

    By geordief, March 20, 2023
    • 30 replies
    • 2.3k views
    • 
    • Markus Hanke
    • March 21, 2023

12. Re imagining the trampoline analogy

    By geordief, March 19, 2023
    • 1 reply
    • 642 views
    • 
    • Markus Hanke
    • March 20, 2023

13. Momentum and spacetime curvature 1 2

    By geordief, March 8, 2023
    • 32 replies
    • 3k views
    • 
    • Genady
    • March 19, 2023

14. Twin paradox (split from Hijack from Jumping out of the black hole)

    By MJ kihara, March 14, 2023
    • 5 replies
    • 844 views
    • 
    • Phi for All
    • March 15, 2023

15. Logic and illogic make up the string.

    By deema, March 14, 2023
    • 1 reply
    • 434 views
    • 
    • Phi for All
    • March 14, 2023

16. Expansion of the universe or contraction of scale?

    By katahiromz, March 6, 2023
    • 14 replies
    • 1.5k views
    • 
    • Genady
    • March 7, 2023

17. Recording or perceiving the activity of an oncoming object

    By geordief, March 2, 2023
    • 17 replies
    • 1.2k views
    • 
    • Genady
    • March 4, 2023

18. Lorentz transformations btw rotating frames of reference

    By geordief, February 25, 2023
    • 5 replies
    • 808 views
    • 
    • md65536
    • February 26, 2023

19. coming apart from

    By Ibrahim Sanad, February 22, 2023
    • 2 replies
    • 613 views
    • 
    • Lorentz Jr
    • February 22, 2023

20. The twin Paradox revisited 1 2 3 4 9

    By Awatso, February 10, 2023
    • 204 replies
    • 11.3k views
    • 
    • martillo
    • February 20, 2023

21. What would happen to time if we could travel faster than light?

    By dimreepr, December 10, 2022
    • 7 replies
    • 1.2k views
    • 
    • Janus
    • February 20, 2023

22. The speed of light and causality 1 2

    By geordief, February 9, 2023
    • 40 replies
    • 2.5k views
    • 
    • Boltzmannbrain
    • February 20, 2023

23. Mass and Energy-Momentum

    By geordief, July 2, 2022
    • 16 replies
    • 1.6k views
    • 
    • studiot
    • February 6, 2023

24. Can a material object cross the event horizon of the Black Hole?

    By rirakib, February 2, 2023
    • 6 replies
    • 973 views
    • 
    • md65536
    • February 5, 2023

25. Why do we need a graviton?

    By DannyWalter, April 22, 2022
    • 7 replies
    • 1.4k views
    • 
    • Tutoroot
    • February 3, 2023