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Physics

The world of forces, particles and high-powered experiments.

Subforums

  1. Classical Physics

    Vector forces, gravity, acceleration, and other facets of mechanics.

    33.4k
    posts

  2. Relativity

    For discussion of problems relating to special and general relativity.

    38.7k
    posts

  3. Quantum Theory

    Quantum physics and related topics.

    27.8k
    posts

  4. Modern and Theoretical Physics

    Atomic structure, nuclear physics, etc.

    30.2k
    posts

  5. Astronomy and Cosmology

    Topics related to observation of space and any related phenomena.

    49.6k
    posts

3555 topics in this forum

  1. initial state of the universe ?

    By 1123581321,
    • 3 replies
    • 1.2k views

  2. Why does water diffuse?

    By scilearner,
    • 4 replies
    • 5.2k views

  3. Is magnetism inverted materiality?

    By lemur,
    • 5 replies
    • 1.6k views

  4. White light reflection holograms

    By Tom13147,
    • 1 reply
    • 1.4k views

  5. about gas expansion

    By littleboy,
    • 5 replies
    • 1.4k views

  6. time

    By jerryyu,
    • 3 replies
    • 1.2k views

  7. how is the doppler effect a valid evident to the idea that our universe is expanding?

    By jerryyu,
    • 15 replies
    • 2.5k views

  8. Energy - Why is sound an energy? etc.

    By Incendia,
    • 15 replies
    • 2.3k views

  9. Partial pressure of a gas.I don't understand

    By scilearner,
    • 7 replies
    • 4.7k views

  10. What is the fastest a realistic rocket could go?

    By Mr Skeptic,
    • 2 replies
    • 1k views

  11. Bandgaps

    By jerryyu,
    • 0 replies
    • 692 views

  12. Incoming light from distant stars

    By PhysicsNut,
    • 9 replies
    • 1.9k views

  13. Uncertainty in Classical trajectories

    By Duda Jarek,
    • 15 replies
    • 2.3k views

  14. A Ring Around The Earth

    By eacn1,
    • 14 replies
    • 5.2k views

  15. building an atom-simulator out of magnets

    By lemur,
    • 4 replies
    • 2k views

  16. Van der Waals equation adapted for paramagnetic gases

    By mississippichem,
    • 4 replies
    • 1.8k views

  17. Field momentum and light pressure

    By Craig Dilworth,
    • 0 replies
    • 689 views

  18. Polarisation

    By Craig Dilworth,
    • 0 replies
    • 627 views

  19. First determination of wavelength

    By Craig Dilworth,
    • 0 replies
    • 606 views

  20. quantum tunnelling

    By ayush garg,
    • 3 replies
    • 1.3k views

  21. Energy related problem

    By rktpro,
    • 4 replies
    • 1k views

  22. Spin Motion

    By Huny,
    • 2 replies
    • 955 views

  23. is there conservation of field-force?

    By lemur,
    • 10 replies
    • 1.7k views

  24. Hi guys, mind helping :D 1 2

    By walshy155,
    • 42 replies
    • 6.1k views

  25. The EM spectrum

    By Incendia,
    • 5 replies
    • 1.6k views
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