Relativity

1972 topics in this forum

1. The twin Paradox revisited 1 2 3 4 9

   By Awatso, February 10, 2023
   • 204 replies
   • 7.2k views
   • 
   • martillo
   • February 20, 2023

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

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

3. The speed of light and causality 1 2

   By geordief, February 9, 2023
   • 40 replies
   • 1.7k views
   • 
   • Boltzmannbrain
   • February 20, 2023

4. Mass and Energy-Momentum

   By geordief, July 2, 2022
   • 16 replies
   • 1.2k views
   • 
   • studiot
   • February 6, 2023

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

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

6. Why do we need a graviton?

   By DannyWalter, April 22, 2022
   • 7 replies
   • 1.1k views
   • 
   • Tutoroot
   • February 3, 2023

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

   By Jalopy, March 3, 2022
   • 12 replies
   • 1.3k views
   • 
   • Tutoroot
   • February 3, 2023

8. What is the smallest object with mass?

   By geordief, June 27, 2022
   • 16 replies
   • 1.3k views
   • 
   • Tutoroot
   • February 3, 2023

9. Why does gravity cause acceleration?

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

10. Einstein Light Clock Conundrum 1 2 3

    By Otto Nomicus, January 25, 2023
    • 55 replies
    • 2.6k views
    • 
    • studiot
    • January 29, 2023

11. Time and relativity (split from The Nature of Time) 1 2 3 4 5

    By DanMP, December 27, 2022
    • 104 replies
    • 5.1k views
    • 
    • Ghideon
    • January 22, 2023

12. GPS timing (from Time and relativity (split from The Nature of Time))

    By swansont, January 12, 2023
    • 3 replies
    • 287 views
    • 
    • StringJunky
    • January 13, 2023

13. Black holes (split from The Nature of Time)

    By geordief, January 1, 2023
    • 3 replies
    • 353 views
    • 
    • Markus Hanke
    • January 2, 2023

14. Question of three clocks 1 2 3

    By mistermack, December 24, 2022
    • 50 replies
    • 2.4k views
    • 
    • Markus Hanke
    • December 31, 2022

15. Is "Galilean gravity" a thing? 1 2

    By geordief, December 24, 2022
    • 42 replies
    • 2k views
    • 
    • joigus
    • December 28, 2022

16. Nice video to explain meaning of metric

    By Markus Hanke, December 18, 2022
    • 1 reply
    • 388 views
    • 
    • MigL
    • December 18, 2022

17. What effect does time dilation have on light? 1 2

    By tmdarkmatter, November 20, 2022
    • 34 replies
    • 1.5k views
    • 
    • swansont
    • December 15, 2022

18. Essay about General Relativity

    By iloveknowledge, March 10, 2019
    • 22 replies
    • 3.2k views
    • 
    • Markus Hanke
    • December 12, 2022

19. Is "positionary-temporal" uncertainty built into spacetime?

    By geordief, November 9, 2022
    • 6 replies
    • 606 views
    • 
    • Markus Hanke
    • December 7, 2022

20. What is gamma factor of object, which is falling into black hole?

    By DimaMazin, November 6, 2022
    • 21 replies
    • 1.5k views
    • 
    • DimaMazin
    • November 25, 2022

21. Minkowski space and geometric intuition

    By Lorentz Jr, November 20, 2022
    • 8 replies
    • 991 views
    • 
    • Lorentz Jr
    • November 20, 2022

22. Using entanglement is not forbidden by relativity??

    By Lorentz Jr, November 18, 2022
    • 18 replies
    • 1.3k views
    • 
    • md65536
    • November 20, 2022

23. Sending an instantaneous signal

    By geordief, November 18, 2022
    • 10 replies
    • 946 views
    • 
    • Endy0816
    • November 18, 2022

24. On Lorentz transforms. 1 2 3

    By Mitcher, August 17, 2022
    • 56 replies
    • 3.9k views
    • 
    • Mitcher
    • October 5, 2022

25. Categorical analysis

    By TheLogicalArc, October 3, 2022
    • 4 replies
    • 591 views
    • 
    • studiot
    • October 4, 2022