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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.

    38.7k
    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

3561 topics in this forum

  1. Recycling Heat 1 2

    By Photon Guy,
    • 30 replies
    • 3.3k views

  2. Find the electric current required.

    By Kakos87,
    • 0 replies
    • 902 views

  3. Group Fluid Framework for accurately measuring fluid dynamics.

    By grayson,
    • 2 replies
    • 942 views

  4. the definition of energy

    By mar_mar,
    • 19 replies
    • 2.1k views

  5. "footage" of current passing through wire

    By robert1978bp,
    • 0 replies
    • 749 views

  6. Is entropy always low in a way?

    By Tristan L,
    • 1 reply
    • 762 views

  7. Will entropy be low much of the time? 1 2

    By Tristan L,
    • 42 replies
    • 34.4k views

  8. Radiation and Lambert's Cosine Law

    By Dewsquad,
    • 1 reply
    • 850 views

  9. Looking for pdfs

    By grayson,
    • 1 reply
    • 750 views

  10. Photon is massless why? 1 2

    By Muhammad Owais Isaac,
    • 47 replies
    • 5.8k views

  11. What is 210J

    By johnsri,
    • 2 replies
    • 736 views

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

    By martillo,
    • 119 replies
    • 9.3k views

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

    By martillo,
    • 31 replies
    • 2.4k views

  14. Mass of a photon particle...

    By Externet,
    • 12 replies
    • 1.7k views
    • KJW
    • KJW

  15. Mushy questions about gravitational waves

    By Danijel Gorupec,
    • 12 replies
    • 2.1k views

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

    By K8H,
    • 6 replies
    • 878 views

  17. JOBS

    By Gian,
    • 8 replies
    • 1.1k views
    • Gian
    • Gian

  18. Any beneficial uses for tritium ?

    By Externet,
    • 16 replies
    • 1.3k views

  19. what are we made of?

    By derek w,
    • 6 replies
    • 2.1k views

  20. The change between kinetic and potential energy

    By grayson,
    • 13 replies
    • 1.5k views

  21. Locality in MTW

    By Genady,
    • 0 replies
    • 420 views

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

    By Psycho666,
    • 9 replies
    • 1.1k views

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

    By Fanghur,
    • 4 replies
    • 815 views

  24. Is CPT symmetry still valid for macroscopic physics? 1 2 3

    By Duda Jarek,
    • 60 replies
    • 5.3k views

  25. Hypothesis on travelling with magnets

    By Goldside543,
    • 7 replies
    • 1k views
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