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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.

    38.5k
    posts

  3. Quantum Theory

    Quantum physics and related topics.

    27.8k
    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.

    48.8k
    posts

3544 topics in this forum

  1. light waves

    By rbouchard47,
    • 7 replies
    • 1.3k views

  2. What is Fire

    By Money,
    • 10 replies
    • 1.7k views

  3. Paper tower! Not easy!

    By grayfalcon89,
    • 18 replies
    • 42.3k views

  4. ice cubes behaviour

    By murulidhara,
    • 12 replies
    • 2.1k views

  5. Popular Science Presentations

    By ajb,
    • 10 replies
    • 1.6k views

  6. Entropy and the arrow of time

    By someguy,
    • 12 replies
    • 1.9k views

  7. Answer my question?

    By Eric0728,
    • 1 reply
    • 877 views

  8. The "Impossible" verified?

    By Don,
    • 16 replies
    • 2k views

  9. Refraction

    By TimbaLanD,
    • 1 reply
    • 953 views

  10. Imagining the Tenth Dimension

    By Innit,
    • 11 replies
    • 1.6k views

  11. earth and moon

    By sciman,
    • 14 replies
    • 2.9k views

  12. Why I Think Time Travel is Impossible 1 2

    By foodchain,
    • 32 replies
    • 3.6k views

  13. magnet question

    By JayUK,
    • 20 replies
    • 2.6k views

  14. There can only be one

    By foodchain,
    • 9 replies
    • 1.4k views

  15. why does a ball bounce?

    By SimonInSimon,
    • 5 replies
    • 2k views

  16. Do you see in frames?

    By mcbrayersc,
    • 5 replies
    • 1.1k views

  17. Atmosphere Question

    By ParanoiA,
    • 3 replies
    • 1k views

  18. The GUN ENGINE??? WTH???

    By ironizer,
    • 2 replies
    • 944 views

  19. Woodburning 'stove' fireplace ventilation...

    By Externet,
    • 1 reply
    • 872 views

  20. Question

    By Money,
    • 9 replies
    • 1.6k views

  21. Frequency/Penetrating power ???

    By YT2095,
    • 15 replies
    • 2.1k views

  22. Galileo's Expements

    By alan2here,
    • 9 replies
    • 2.5k views

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

    By alan2here,
    • 12 replies
    • 1.3k views

  24. "Chemical shift"

    By Externet,
    • 0 replies
    • 1.1k views

  25. tell me about free fall

    By sciman,
    • 10 replies
    • 1.3k views
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