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Relativity

For discussion of problems relating to special and general relativity.

1971 topics in this forum

  1. Is the block universe just a whole bunch of world lines (from the elementary particles)? 1 2 3

    By 34student,
    • 55 replies
    • 3.9k views

  2. Could someone please explain that although we are told the universe is expanding.

    By Geniuscfcp,
    • 4 replies
    • 906 views

  3. Requirement for two "nows" to grasp the idea of Simultaneity 1 2

    By tar,
    • 39 replies
    • 3.2k views

  4. Quick relativity of simultaneity and length contraction thought experiment

    By md65536,
    • 5 replies
    • 848 views

  5. Length contraction in a block universe must be an illusion 1 2 3 4 6

    By 34student,
    • 139 replies
    • 8.8k views

  6. Total newb question

    By kjp,
    • 7 replies
    • 844 views

  7. What experimental verification exists to substantiate that light from a receding light source travels at c to a relatively stationary destination?

    By jamesfairclear,
    • 15 replies
    • 1.2k views

  8. The smallest receiver

    By geordief,
    • 2 replies
    • 645 views

  9. Special Rel. Doubt

    By mathematic,
    • 7 replies
    • 880 views

  10. The equivalence principle and weightlessness. 1 2

    By geordief,
    • 29 replies
    • 2.4k views

  11. Tensor

    By Lizwi,
    • 7 replies
    • 913 views

  12. Question about length contraction and motion 1 2

    By Dagl1,
    • 27 replies
    • 2.4k views

  13. Synchrotron Wavelength

    By Enthalpy,
    • 6 replies
    • 1k views

  14. Synchrotron Radiation Interference

    By Enthalpy,
    • 0 replies
    • 482 views

  15. Observe a Falling Charge Radiate 1 2

    By Enthalpy,
    • 30 replies
    • 4.7k views

  16. Time dilation, electrons, and quantum mechanics

    By Dagl1,
    • 16 replies
    • 1.3k views

  17. Sun & black holes

    By Paul Singh Jr,
    • 13 replies
    • 1.8k views

  18. Time is a physical constraint

    By ReSublimeCarbonX,
    • 5 replies
    • 959 views

  19. Einstein's rods

    By geordief,
    • 5 replies
    • 1.3k views

  20. Question that bothers me for a really long time....

    By Geekyrussian,
    • 14 replies
    • 1.6k views

  21. Relativistic mass

    By Heis3nberg,
    • 1 reply
    • 645 views

  22. Who can explain the incompatibilities between GR and QM for me?

    By Holmes,
    • 17 replies
    • 1.3k views

  23. FTL Space Travel

    By Sirflappington,
    • 10 replies
    • 2.2k views

  24. Optical Data describing Structure of Spacetime:

    By beecee,
    • 2 replies
    • 825 views

  25. Modification of twin "paradox" with a wormhole.

    By md65536,
    • 18 replies
    • 2.3k views
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