Physics & Math

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  1. PengKuan

    How to test length contraction by experiment?

    PengKuan, Jun 17, 2019 ... 15 16 17
    Replies:
    336
    Views:
    18,162
    PengKuan
    May 4, 2020
  2. arfa brane

    What is a complex frequency?

    arfa brane, Mar 4, 2020 ... 2 3
    Replies:
    54
    Views:
    4,990
    exchemist
    Apr 19, 2020
  3. Saint

    Second Law of thermodynamics vs. Evolution

    Saint, Apr 6, 2020 ... 2
    Replies:
    31
    Views:
    2,614
    arfa brane
    Apr 16, 2020
  4. paddoboy

    The Never ending saga of testing GR:

    paddoboy, Apr 9, 2020
    Replies:
    5
    Views:
    829
    Xelasnave.1947
    Apr 10, 2020
  5. just me

    death for unaging people.

    just me, Mar 12, 2020
    Replies:
    5
    Views:
    1,069
    origin
    Apr 6, 2020
  6. paddoboy

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

    paddoboy, Apr 3, 2020
    Replies:
    0
    Views:
    607
    paddoboy
    Apr 3, 2020
  7. Saint

    Newton's First Law

    Saint, Feb 22, 2020
    Replies:
    15
    Views:
    1,023
    James R
    Mar 27, 2020
  8. TonyYuan

    The Fifth Scene Of Special Relativity

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

    Carbon Fusion Review

    Vmedvil, Mar 17, 2020
    Replies:
    3
    Views:
    757
    Bells
    Mar 18, 2020
  10. msbiljanica

    equality

    msbiljanica, Mar 1, 2020
    Replies:
    3
    Views:
    460
    msbiljanica
    Mar 4, 2020
  11. paddoboy

    The 101 year long life of Katherine Johnson:

    paddoboy, Mar 2, 2020
    Replies:
    1
    Views:
    417
    paddoboy
    Mar 2, 2020
  12. Saint

    Why photon is mass-less?

    Saint, Feb 9, 2020 ... 2 3 4
    Replies:
    74
    Views:
    4,086
    exchemist
    Mar 2, 2020
  13. fess

    Where are the bullets?

    fess, Feb 29, 2020
    Replies:
    5
    Views:
    598
    James R
    Mar 1, 2020
  14. Asexperia

    What is color?

    Asexperia, Nov 24, 2019 ... 7 8 9
    Replies:
    172
    Views:
    9,204
    arfa brane
    Feb 20, 2020
  15. Saint

    What will happen to our motion when the Earth stops suddenly?

    Saint, Jan 30, 2020 ... 2
    Replies:
    33
    Views:
    1,827
    James R
    Feb 20, 2020
  16. HawkI

    How many Dimensions does a Sphere have?

    HawkI, Feb 6, 2020 ... 2
    Replies:
    26
    Views:
    1,523
    James R
    Feb 10, 2020
  17. river

    Quantum Quasi-particle Theory

    river, Jan 12, 2020
    Replies:
    1
    Views:
    528
    Beaconator
    Feb 7, 2020
  18. Interstella

    A 3d math question.

    Interstella, Oct 17, 2019 ... 2
    Replies:
    23
    Views:
    1,796
    LaurieAG
    Feb 4, 2020
  19. arfa brane

    Perception of speech

    arfa brane, Feb 2, 2020
    Replies:
    13
    Views:
    570
    parmalee
    Feb 4, 2020
  20. river

    QM gap(less) Quantum Phase Transitions

    river, Jan 26, 2020
    Replies:
    0
    Views:
    331
    river
    Jan 26, 2020
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