Relativity

1988 topics in this forum

1. The equivalence principle and the curvature of spacetime

   By geordief, September 22, 2020
   • 14 replies
   • 2k views
   • 
   • joigus
   • September 23, 2020

2. gravity can pull us through the cosmos to where we want to go 1 2 3

   By farsideofourmoon, May 13, 2020
   • 53 replies
   • 108.5k views
   • 
   • swansont
   • September 20, 2020

3. Time Zone Change Syndrome

   By 20ny, September 14, 2020
   • 6 replies
   • 1.8k views
   • 
   • Eise
   • September 15, 2020

4. Invariance of the speed of light

   By geordief, September 11, 2020
   • 17 replies
   • 1.6k views
   • 
   • swansont
   • September 14, 2020

5. Measuring the non-linearity residual between average and summed instantaneous velocities

   By drumbo, September 11, 2020
   • 9 replies
   • 1.5k views
   • 
   • md65536
   • September 12, 2020

6. Wouldn't the Earth appear curved, even if it were flat?

   By Jonah Thorsson, September 3, 2020
   • 22 replies
   • 2.3k views
   • 
   • Markus Hanke
   • September 5, 2020

7. Double slit and time dilation

   By Dord, May 28, 2020
   • 6 replies
   • 1.5k views
   • 
   • Markus Hanke
   • September 5, 2020

8. Ballistic 'not-light' cone question

   By Halc, August 27, 2020
   • 11 replies
   • 1.7k views
   • 
   • swansont
   • August 29, 2020

9. Could cause and effect be broken, if time stopped?

   By empleat, August 18, 2020
   • 10 replies
   • 1.4k views
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   • MigL
   • August 26, 2020

10. Lorentz-contraction 1 2 3

    By Winterlong, August 8, 2020
    • 62 replies
    • 90.8k views
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    • swansont
    • August 25, 2020

11. Space and time

    By Kenil Rajyaguru, August 18, 2020
    • 3 replies
    • 979 views
    • 
    • Strange
    • August 18, 2020

12. Slicing simultaneity at an angle into past and furure

    By bob campbell, August 3, 2020
    • 21 replies
    • 2k views
    • 
    • md65536
    • August 5, 2020

13. Why do apples fall rather than lift off the ground? 1 2

    By geordief, June 2, 2020
    • 28 replies
    • 66.5k views
    • 
    • jajrussel
    • July 15, 2020

14. Spacetime Diagrams Lorentz Transform.

    By can't_think_of_a_name, July 8, 2020
    • 5 replies
    • 1.2k views
    • 
    • md65536
    • July 10, 2020

15. Black holes and evaporation 1 2 3 4 6

    By rjbeery, June 15, 2020
    • 128 replies
    • 71.5k views
    • 
    • Phi for All
    • July 9, 2020

16. time is both absolute and relative

    By motlan, July 1, 2020
    • 6 replies
    • 1.9k views
    • 
    • Janus
    • July 1, 2020

17. Frames of reference in Special Relativity

    By geordief, July 1, 2020
    • 8 replies
    • 1k views
    • 
    • geordief
    • July 1, 2020

18. What would a stationary observer see if you travelled close the speed of light?

    By Katalos1997, June 15, 2020
    • 5 replies
    • 1.2k views
    • 
    • Strange
    • June 15, 2020

19. The spacetime curvature of a point between two massive bodies

    By geordief, June 12, 2020
    • 13 replies
    • 1.5k views
    • 
    • Mordred
    • June 14, 2020

20. How do gravitational fields interact?

    By geordief, June 4, 2020
    • 15 replies
    • 2.2k views
    • 
    • joigus
    • June 10, 2020

21. : How do you create the flat region in between a warp bubble for a warp drive?

    By can't_think_of_a_name, May 23, 2020
    • 12 replies
    • 1.9k views
    • 
    • can't_think_of_a_name
    • May 27, 2020

22. Is there a value or something else that indicates the orientation of an orbit?

    By Flavio Manna, May 11, 2020
    • 19 replies
    • 2.7k views
    • 
    • studiot
    • May 22, 2020

23. Taking Warp Drive Seriously: 1 2

    By beecee, March 3, 2020
    • 28 replies
    • 87.1k views
    • 
    • Markus Hanke
    • May 7, 2020

24. Can someone please explain galaxies moving 5 times light speed and 1 2

    By Angelo, January 7, 2020
    • 37 replies
    • 49.4k views
    • 
    • dimreepr
    • May 4, 2020

25. The spacetime interval in General Relativity

    By geordief, April 21, 2020
    • 13 replies
    • 2k views
    • 
    • md65536
    • April 24, 2020