Physics & Math

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  1. Confused2

    Travelling back down a train - relatively speaking.

    Confused2, Jul 4, 2020
    Replies:
    10
    Views:
    1,174
    Confused2
    Jul 5, 2020
  2. paddoboy

    Astrophysicists confirm cornerstone of Einstein's Theory of Relativity [again!]

    paddoboy, Jun 11, 2020
    Replies:
    1
    Views:
    1,336
    tomf
    Sep 11, 2020
  3. Confused2

    Invariant spacetime and time dilation

    Confused2, Jun 11, 2020 ... 3 4 5
    Replies:
    86
    Views:
    6,906
    phyti
    Jul 19, 2020
  4. Xelasnave.1947

    What would happen if...

    Xelasnave.1947, May 27, 2020
    Replies:
    1
    Views:
    1,051
    Michael 345
    May 27, 2020
  5. Saint

    How small can be our transistor?

    Saint, May 4, 2020
    Replies:
    7
    Views:
    1,346
    Write4U
    May 16, 2020
  6. Saint

    What is quark?

    Saint, May 4, 2020
    Replies:
    13
    Views:
    2,120
    exchemist
    Oct 7, 2020
  7. Saint

    Clock runs slower when speeding?

    Saint, May 1, 2020 ... 6 7 8
    Replies:
    140
    Views:
    9,652
    phyti
    May 28, 2020
  8. Saint

    How is heat carried by photons?

    Saint, Apr 27, 2020 ... 2
    Replies:
    31
    Views:
    3,105
    Write4U
    May 7, 2020
  9. paddoboy

    The Never ending saga of testing GR:

    paddoboy, Apr 9, 2020
    Replies:
    5
    Views:
    830
    Xelasnave.1947
    Apr 10, 2020
  10. Saint

    Second Law of thermodynamics vs. Evolution

    Saint, Apr 6, 2020 ... 2
    Replies:
    31
    Views:
    2,616
    arfa brane
    Apr 16, 2020
  11. paddoboy

    New laser technique: More powerful—and smaller—particle accelerators

    paddoboy, Apr 3, 2020
    Replies:
    0
    Views:
    607
    paddoboy
    Apr 3, 2020
  12. ralfcis

    Janus' method for non-linear velocity addition

    ralfcis, Mar 20, 2020 ... 2 3
    Replies:
    41
    Views:
    4,884
    ralfcis
    Mar 29, 2021
  13. TonyYuan

    The Fifth Scene Of Special Relativity

    TonyYuan, Mar 19, 2020
    Replies:
    8
    Views:
    758
    TonyYuan
    Mar 20, 2020
  14. Vmedvil
    Locked

    Carbon Fusion Review

    Vmedvil, Mar 17, 2020
    Replies:
    3
    Views:
    760
    Bells
    Mar 18, 2020
  15. Saint

    What mathematics should I know to study quantum mechanics?

    Saint, Mar 12, 2020 ... 2 3
    Replies:
    40
    Views:
    5,255
    arfa brane
    Aug 21, 2020
  16. just me

    death for unaging people.

    just me, Mar 12, 2020
    Replies:
    5
    Views:
    1,071
    origin
    Apr 6, 2020
  17. arfa brane

    What is a complex frequency?

    arfa brane, Mar 4, 2020 ... 2 3
    Replies:
    54
    Views:
    5,004
    exchemist
    Apr 19, 2020
  18. paddoboy

    The 101 year long life of Katherine Johnson:

    paddoboy, Mar 2, 2020
    Replies:
    1
    Views:
    417
    paddoboy
    Mar 2, 2020
  19. msbiljanica

    equality

    msbiljanica, Mar 1, 2020
    Replies:
    3
    Views:
    461
    msbiljanica
    Mar 4, 2020
  20. fess

    Where are the bullets?

    fess, Feb 29, 2020
    Replies:
    5
    Views:
    600
    James R
    Mar 1, 2020
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