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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.

    33.1k
    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. High priority problem in Physics: real equation of force is F = ma and not F = dp/dt

    By martillo,
    • 1 reply
    • 245 views

  2. Radio Frequency / Microwave Radiation

    By chrisa,
    • 21 replies
    • 1.1k views

  3. Find the electric current required.

    By Kakos87,
    • 0 replies
    • 283 views

  4. Recycling Heat 1 2

    By Photon Guy,
    • 30 replies
    • 1.6k views

  5. Group Fluid Framework for accurately measuring fluid dynamics.

    By grayson,
    • 2 replies
    • 266 views

  6. Why do we use kelvin to measure heat?

    By grayson,
    • 8 replies
    • 458 views

  7. the definition of energy

    By mar_mar,
    • 19 replies
    • 1.1k views

  8. "footage" of current passing through wire

    By robert1978bp,
    • 0 replies
    • 194 views

  9. Is entropy always low in a way?

    By Tristan L,
    • 1 reply
    • 199 views

  10. Radiation and Lambert's Cosine Law

    By Dewsquad,
    • 1 reply
    • 221 views

  11. Looking for pdfs

    By grayson,
    • 1 reply
    • 239 views

  12. Fluctuating magnetic fields cause heart attacks and strokes to double! 1 2

    By LaraKnowles,
    • 46 replies
    • 2.6k views

  13. What is 210J

    By johnsri,
    • 2 replies
    • 235 views

  14. Matter waves (split from Photon is massless why?) 1 2 3 4 5

    By martillo,
    • 119 replies
    • 5.8k views

  15. Photon is massless why? 1 2

    By Muhammad Owais Isaac,
    • 47 replies
    • 3.8k views

  16. Forgotten energy in interactions of particles with opposite charge. 1 2

    By martillo,
    • 31 replies
    • 1.3k views

  17. JOBS

    By Gian,
    • 8 replies
    • 657 views

  18. Is this possible? Any thermodynamics dynamos out there want to weigh in?

    By K8H,
    • 6 replies
    • 565 views

  19. Any beneficial uses for tritium ?

    By Externet,
    • 16 replies
    • 783 views

  20. Locality in MTW

    By Genady,
    • 0 replies
    • 286 views

  21. The change between kinetic and potential energy

    By grayson,
    • 13 replies
    • 612 views

  22. Masers instead lasers for nuclear fusion (I asked Bard)

    By Psycho666,
    • 9 replies
    • 651 views

  23. Technology based on extending the range of the Strong Force?

    By Fanghur,
    • 4 replies
    • 579 views

  24. What is physics?

    By richards1,
    • 1 reply
    • 312 views

  25. Tired light (split from Entropy, Energy and the speed of light)

    By DeaneTR,
    • 1 reply
    • 386 views
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