Physics

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, April 7
   • 1 reply
   • 214 views
   • 
   • swansont
   • April 7

2. Question about Basics of Gravity 1 2 3 4

   By tylers100, October 17, 2021
   • 97 replies
   • 8.6k views
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   • Mordred
   • April 7

3. Why do we use kelvin to measure heat?

   By grayson, January 7
   • 8 replies
   • 448 views
   • 
   • falkor1995
   • April 3

4. Radio Frequency / Microwave Radiation

   By chrisa, February 21
   • 21 replies
   • 1.1k views
   • 
   • chrisa
   • February 29

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

   By LaraKnowles, December 10, 2023
   • 46 replies
   • 2.6k views
   • 
   • swansont
   • February 18

6. Recycling Heat 1 2

   By Photon Guy, January 9
   • 30 replies
   • 1.6k views
   • 
   • sethoflagos
   • January 21

7. Find the electric current required.

   By Kakos87, January 16
   • 0 replies
   • 279 views
   • 
   • Kakos87
   • January 16

8. Group Fluid Framework for accurately measuring fluid dynamics.

   By grayson, January 8
   • 2 replies
   • 262 views
   • 
   • grayson
   • January 8

9. the definition of energy

   By mar_mar, December 26, 2023
   • 19 replies
   • 1.1k views
   • 
   • exchemist
   • December 26, 2023

10. "footage" of current passing through wire

    By robert1978bp, December 23, 2023
    • 0 replies
    • 191 views
    • 
    • robert1978bp
    • December 23, 2023

11. Is entropy always low in a way?

    By Tristan L, December 23, 2023
    • 1 reply
    • 195 views
    • 
    • Bufofrog
    • December 23, 2023

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

    By Tristan L, May 31, 2020
    • 42 replies
    • 32.8k views
    • 
    • swansont
    • December 20, 2023

13. Radiation and Lambert's Cosine Law

    By Dewsquad, December 19, 2023
    • 1 reply
    • 217 views
    • 
    • swansont
    • December 19, 2023

14. Looking for pdfs

    By grayson, December 17, 2023
    • 1 reply
    • 234 views
    • 
    • iNow
    • December 17, 2023

15. Photon is massless why? 1 2

    By Muhammad Owais Isaac, November 8, 2023
    • 47 replies
    • 3.8k views
    • 
    • Alysdexic
    • December 5, 2023

16. What is 210J

    By johnsri, November 25, 2023
    • 2 replies
    • 229 views
    • 
    • Bufofrog
    • November 25, 2023

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

    By martillo, November 11, 2023
    • 119 replies
    • 5.8k views
    • 
    • martillo
    • November 19, 2023

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

    By martillo, October 11, 2023
    • 31 replies
    • 1.3k views
    • 
    • martillo
    • November 14, 2023

19. Mass of a photon particle...

    By Externet, July 8, 2023
    • 12 replies
    • 1k views
    • 
    • KJW
    • November 12, 2023

20. Mushy questions about gravitational waves

    By Danijel Gorupec, February 16, 2023
    • 12 replies
    • 1.5k views
    • 
    • swansont
    • October 12, 2023

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

    By K8H, September 5, 2023
    • 6 replies
    • 562 views
    • 
    • J.C.MacSwell
    • October 3, 2023

22. JOBS

    By Gian, September 10, 2023
    • 8 replies
    • 652 views
    • 
    • Gian
    • September 11, 2023

23. Any beneficial uses for tritium ?

    By Externet, September 5, 2023
    • 16 replies
    • 778 views
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    • John Cuthber
    • September 6, 2023

24. what are we made of?

    By derek w, November 5, 2013
    • 6 replies
    • 1.9k views
    • 
    • ollybach
    • September 3, 2023

25. The change between kinetic and potential energy

    By grayson, September 2, 2023
    • 13 replies
    • 596 views
    • 
    • studiot
    • September 2, 2023