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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.

    33.5k
    posts

  2. Relativity

    For discussion of problems relating to special and general relativity.

    38.8k
    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

3561 topics in this forum

  1. The "Impossible" verified?

    By Don,
    • 16 replies
    • 2.3k views
    • Don
    • Don

  2. Refraction

    By TimbaLanD,
    • 1 reply
    • 1k views

  3. Imagining the Tenth Dimension

    By Innit,
    • 11 replies
    • 1.8k views

  4. earth and moon

    By sciman,
    • 14 replies
    • 3.1k views
    • D H
    • D H

  5. Why I Think Time Travel is Impossible 1 2

    By foodchain,
    • 32 replies
    • 4.2k views

  6. magnet question

    By JayUK,
    • 20 replies
    • 2.9k views

  7. There can only be one

    By foodchain,
    • 9 replies
    • 1.6k views

  8. why does a ball bounce?

    By SimonInSimon,
    • 5 replies
    • 2.2k views

  9. Do you see in frames?

    By mcbrayersc,
    • 5 replies
    • 1.2k views

  10. Atmosphere Question

    By ParanoiA,
    • 3 replies
    • 1.1k views

  11. The GUN ENGINE??? WTH???

    By ironizer,
    • 2 replies
    • 1k views

  12. Woodburning 'stove' fireplace ventilation...

    By Externet,
    • 1 reply
    • 949 views

  13. Question

    By Money,
    • 9 replies
    • 1.8k views

  14. Frequency/Penetrating power ???

    By YT2095,
    • 15 replies
    • 2.4k views

  15. Galileo's Expements

    By alan2here,
    • 9 replies
    • 2.8k views

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

    By alan2here,
    • 12 replies
    • 1.6k views

  17. "Chemical shift"

    By Externet,
    • 0 replies
    • 1.1k views

  18. tell me about free fall

    By sciman,
    • 10 replies
    • 1.5k views

  19. Bitter Magnetics

    By andy73,
    • 6 replies
    • 1.7k views

  20. Cosmic rays and measuring them

    By dichotomy,
    • 22 replies
    • 2.7k views

  21. DNA and Lasers

    By foodchain,
    • 7 replies
    • 1.5k views

  22. confused about spacetime expansion.

    By insane_alien,
    • 6 replies
    • 1.8k views

  23. Young Earther Question

    By Naturalist,
    • 3 replies
    • 1.5k views

  24. Launching space shuttles - not vertical?

    By Agony,
    • 10 replies
    • 1.6k views

  25. Light and Gravity

    By foodchain,
    • 5 replies
    • 1.7k views
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