Relativity

1991 topics in this forum

1. What is Space made of? 1 2 3 4 16

   By Mordred, May 31, 2015
   • 392 replies
   • 86.1k views
   • 
   • Mordred
   • August 25, 2024

2. Special Relativity Paradox 1 2

   By M S La Moreaux, February 27
   • 34 replies
   • 1.5k views
   • 
   • swansont
   • March 7

3. Mass and curvature (split from Question about matter and space-time)

   By Dejan1981, February 18
   • 20 replies
   • 876 views
   • 
   • swansont
   • February 20

4. Favorite Warp Drive Direction

   By dedo, January 29
   • 0 replies
   • 305 views
   • 
   • dedo
   • January 29

5. The speed of light

   By m_m, January 19
   • 9 replies
   • 566 views
   • 
   • swansont
   • January 19

6. Path of photon in gravitational field

   By StringJunky, January 18
   • 7 replies
   • 424 views
   • 
   • Markus Hanke
   • January 19

7. Is such a flaw conceivable in GR? 1 2 3

   By externo, November 8, 2024
   • 51 replies
   • 2.7k views
   • 
   • studiot
   • January 16

8. what if we believe what is not real [time]

   By Wanjala Joseph, January 12
   • 4 replies
   • 475 views
   • 
   • Wanjala Joseph
   • January 12

9. What does light feel about its motion?

   By Munim, October 6, 2024
   • 16 replies
   • 1.3k views
   • 
   • Khanzhoren
   • January 5

10. Taking my girlfriend to Alpha Centauri on the Millennium Falcon 2 1 2

    By Gian, October 24, 2024
    • 39 replies
    • 2.5k views
    • 
    • Halc
    • November 26, 2024

11. Is rapidity a measure of acceleration? 1 2

    By md65536, April 19, 2024
    • 28 replies
    • 2.7k views
    • 
    • joigus
    • November 15, 2024

12. Neutral simultaneity for two frames. 1 2 3 4 9

    By DimaMazin, December 9, 2022
    • 205 replies
    • 18k views
    • 
    • Mordred
    • November 10, 2024

13. How do we measure the degree of "change" between 2 systems?

    By geordief, November 7, 2024
    • 12 replies
    • 823 views
    • 
    • swansont
    • November 7, 2024

14. The closer to the speed of light, the more length contraction in the direction of motion (SRT). 1 2 3

    By Maartenn100, October 3, 2024
    • 60 replies
    • 4.6k views
    • 
    • Halc
    • October 23, 2024

15. Length contraction in a doughnut shaped universe.

    By grayson, April 1, 2024
    • 7 replies
    • 1.5k views
    • 
    • studiot
    • September 14, 2024

16. Final Parsec Problem

    By MigL, July 31, 2024
    • 6 replies
    • 1.3k views
    • 
    • Mordred
    • August 22, 2024

17. Gullstrand–Painlevé coordinates 1 2 3

    By externo, July 27, 2024
    • 50 replies
    • 3.1k views
    • 
    • Mordred
    • August 3, 2024

18. Gravity drive

    By Dmitriy, July 21, 2024
    • 7 replies
    • 1.1k views
    • 
    • Dmitriy
    • July 21, 2024

19. Alcubierre Warp Drives and Strong Gravity Fields

    By GeeKay, July 14, 2024
    • 12 replies
    • 1.4k views
    • 
    • MigL
    • July 17, 2024

20. Astrogeomanity: A Comprehensive Framework for Human Evolution in Space

    By Daniel Dux, July 7, 2024
    • 2 replies
    • 1k views
    • 
    • swansont
    • July 8, 2024

21. Proof that Einstein Special relativity is false because light is not isotropic in all reference frames.

    By externo, June 26, 2024
    • 5 replies
    • 1.3k views
    • 
    • swansont
    • June 26, 2024

22. Why didn't gravity seem to be understood before if there were scales?

    By Wigberto Marciaga, May 30, 2024
    • 3 replies
    • 1.2k views
    • 
    • swansont
    • May 30, 2024

23. Combined speeds at relativistic velocities 1 2

    By Moontanman, May 1, 2024
    • 32 replies
    • 2.7k views
    • 
    • Ghideon
    • May 2, 2024

24. Twin paradox with a twist

    By DanMP, April 25, 2024
    • 19 replies
    • 2k views
    • 
    • DanMP
    • May 2, 2024

25. The equivalence principle and blueshift

    By DanMP, April 25, 2024
    • 12 replies
    • 1.7k views
    • 
    • Markus Hanke
    • April 30, 2024