Relativity

1988 topics in this forum

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

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

2. Spacetime intervals

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

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

   By geordief, May 8, 2023
   • 31 replies
   • 2.3k views
   • 
   • Mordred
   • May 11, 2023

4. The nature of space and time

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

5. ... paradox help needed ...

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

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

   By Genady, April 8, 2023
   • 64 replies
   • 4.7k views
   • 
   • studiot
   • April 12, 2023

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

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

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

   By geordief, March 20, 2023
   • 30 replies
   • 2.2k views
   • 
   • Markus Hanke
   • March 21, 2023

9. Re imagining the trampoline analogy

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

10. Momentum and spacetime curvature 1 2

    By geordief, March 8, 2023
    • 32 replies
    • 2.8k views
    • 
    • Genady
    • March 19, 2023

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

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

12. Logic and illogic make up the string.

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

13. Expansion of the universe or contraction of scale?

    By katahiromz, March 6, 2023
    • 14 replies
    • 1.4k views
    • 
    • Genady
    • March 7, 2023

14. Recording or perceiving the activity of an oncoming object

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

15. Lorentz transformations btw rotating frames of reference

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

16. coming apart from

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

17. The twin Paradox revisited 1 2 3 4 9

    By Awatso, February 10, 2023
    • 204 replies
    • 10.7k views
    • 
    • martillo
    • February 20, 2023

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

    By dimreepr, December 10, 2022
    • 7 replies
    • 1.1k views
    • 
    • Janus
    • February 20, 2023

19. The speed of light and causality 1 2

    By geordief, February 9, 2023
    • 40 replies
    • 2.4k views
    • 
    • Boltzmannbrain
    • February 20, 2023

20. Mass and Energy-Momentum

    By geordief, July 2, 2022
    • 16 replies
    • 1.5k views
    • 
    • studiot
    • February 6, 2023

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

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

22. Why do we need a graviton?

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

23. Light has no mass because gravity and light travel at the same speed, true or false?

    By Jalopy, March 3, 2022
    • 12 replies
    • 1.6k views
    • 
    • Tutoroot
    • February 3, 2023

24. What is the smallest object with mass?

    By geordief, June 27, 2022
    • 16 replies
    • 1.7k views
    • 
    • Tutoroot
    • February 3, 2023

25. Why does gravity cause acceleration?

    By Fly135, September 14, 2022
    • 3 replies
    • 943 views
    • 
    • Tutoroot
    • February 3, 2023