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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.

    33.2k
    posts

  2. Relativity

    For discussion of problems relating to special and general relativity.

    38.4k
    posts

  3. Quantum Theory

    Quantum physics and related topics.

    27.7k
    posts

  4. Modern and Theoretical Physics

    Atomic structure, nuclear physics, etc.

    29.9k
    posts

  5. Astronomy and Cosmology

    Topics related to observation of space and any related phenomena.

    48.7k
    posts

3543 topics in this forum

  1. What is Fire

    By Money,
    • 10 replies
    • 1.7k views

  2. Paper tower! Not easy!

    By grayfalcon89,
    • 18 replies
    • 42.3k views

  3. ice cubes behaviour

    By murulidhara,
    • 12 replies
    • 2.1k views

  4. Popular Science Presentations

    By ajb,
    • 10 replies
    • 1.6k views

  5. Entropy and the arrow of time

    By someguy,
    • 12 replies
    • 1.9k views

  6. Answer my question?

    By Eric0728,
    • 1 reply
    • 876 views

  7. The "Impossible" verified?

    By Don,
    • 16 replies
    • 2k views

  8. Refraction

    By TimbaLanD,
    • 1 reply
    • 950 views

  9. Imagining the Tenth Dimension

    By Innit,
    • 11 replies
    • 1.6k views

  10. earth and moon

    By sciman,
    • 14 replies
    • 2.9k views

  11. Why I Think Time Travel is Impossible 1 2

    By foodchain,
    • 32 replies
    • 3.6k views

  12. magnet question

    By JayUK,
    • 20 replies
    • 2.6k views

  13. There can only be one

    By foodchain,
    • 9 replies
    • 1.4k views

  14. why does a ball bounce?

    By SimonInSimon,
    • 5 replies
    • 2k views

  15. Do you see in frames?

    By mcbrayersc,
    • 5 replies
    • 1.1k views

  16. Atmosphere Question

    By ParanoiA,
    • 3 replies
    • 1k views

  17. The GUN ENGINE??? WTH???

    By ironizer,
    • 2 replies
    • 944 views

  18. Woodburning 'stove' fireplace ventilation...

    By Externet,
    • 1 reply
    • 871 views

  19. Question

    By Money,
    • 9 replies
    • 1.6k views

  20. Frequency/Penetrating power ???

    By YT2095,
    • 15 replies
    • 2.1k views

  21. Galileo's Expements

    By alan2here,
    • 9 replies
    • 2.5k views

  22. http://gprime.net/video.php/jaylenoinhalesantihelium

    By alan2here,
    • 12 replies
    • 1.3k views

  23. "Chemical shift"

    By Externet,
    • 0 replies
    • 1.1k views

  24. tell me about free fall

    By sciman,
    • 10 replies
    • 1.3k views

  25. Bitter Magnetics

    By andy73,
    • 6 replies
    • 1.6k views
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