Physics and Mathematics

2,457 topics in this forum

1. What does this mean?

   By Trithinium, December 31, 2020
   • 1 reply
   • 440 views
   • 
   • CountryBoy
   • January 4

2. Is this a hard question?

   By Trithinium, December 31, 2020
   • 2 replies
   • 501 views
   • 
   • OceanBreeze
   • January 2

3. Experimental research of flapping flight, unexplored aerodynamics phenomenon and the question of the effectiveness of a flying saucer

   By MasterOgon, October 18, 2020
   • 6 replies
   • 1.2k views
   • 
   • MasterOgon
   • December 31, 2020

4. The Actual Solution To The Ehrenfest Paradox (Relativistic Spinning Disk) 1 2

   By AnssiH, July 21, 2020   

   • Ehrenfest Paradox
   • Special Relativity
   • (and 1 more)

     Tagged with:

     • Ehrenfest Paradox
     • Special Relativity
     • Spinning Disk
   • 31 replies
   • 2.3k views
   • 
   • AnssiH
   • December 28, 2020

5. Scientists create memory device the size of a single molecule

   By TheAngrySage, November 30, 2020
   • 1 reply
   • 359 views
   • 
   • TheAngrySage
   • November 30, 2020

6. Turning Effects of Force

   By kpeace5, November 30, 2020
   • 0 replies
   • 312 views
   • 
   • kpeace5
   • November 30, 2020

7. Neutron Star Astrochemistry

   By Anchovyforestbane, November 17, 2020   

   • astrochemistry
   • astrophysics
   • 0 replies
   • 234 views
   • 
   • Anchovyforestbane
   • November 17, 2020

8. Geometry of Pasta

   By Anchovyforestbane, November 17, 2020   

   • 3d geometry
   • surface area
   • (and 1 more)

     Tagged with:

     • 3d geometry
     • surface area
     • volumetry
   • 0 replies
   • 225 views
   • 
   • Anchovyforestbane
   • November 17, 2020

9. Spin of a Particle?

   By Anchovyforestbane, November 11, 2020   

   • nuclear physics
   • angular momentum
   • 0 replies
   • 264 views
   • 
   • Anchovyforestbane
   • November 11, 2020

10. General Relativity: Energy Density and Gravity's Force

    By VictorMedvil, November 5, 2020
    • 0 replies
    • 424 views
    • 
    • VictorMedvil
    • November 5, 2020

11. Smooth Earth 1 2

    By Anchovyforestbane, October 23, 2020   

    • conceptual physics
    • 3d geometry
    • (and 1 more)

      Tagged with:

      • conceptual physics
      • 3d geometry
      • geodesic mathematics
    • 17 replies
    • 1k views
    • 
    • Anchovyforestbane
    • November 2, 2020

12. Christoffel Notation

    By Anchovyforestbane, October 14, 2020
    • 3 replies
    • 460 views
    • 
    • VictorMedvil
    • October 17, 2020

13. Stability of the Hydrogen Atom 1 2

    By Mike C, November 2, 2007
    • 31 replies
    • 4.2k views
    • 
    • OceanBreeze
    • October 9, 2020

14. Congratulations Roger Penrose, Reinhard Genzel and Andrea Ghez for the Nobel Prize in Physics 2020

    By Mutex, October 7, 2020   

    • https://www.reuters.com/article/nobel-prize-physics-int-iduskbn26r1ng
    • 0 replies
    • 294 views
    • 
    • Mutex
    • October 7, 2020

15. Heat Transfer in Tyres

    By Raamesh, October 2, 2020
    • 1 reply
    • 289 views
    • 
    • OceanBreeze
    • October 5, 2020

16. Does Quantum Mechanics Mean There Is A Finite Number Of Colours?

    By Omnifarious, September 10, 2020   

    • photons
    • atoms
    • (and 5 more)

      Tagged with:

      • photons
      • atoms
      • light
      • wavelengths
      • colours
      • photoelectric
      • photoelectrons
    • 13 replies
    • 805 views
    • 
    • Mutex
    • September 16, 2020

17. Seemingly Unnamed Toroid(?) Structure

    By Anchovyforestbane, September 11, 2020   

    • 3D geometry
    • 9 replies
    • 558 views
    • 
    • Dubbelosix
    • September 15, 2020

18. Seemingly Unnamed Apeirohedron

    By Anchovyforestbane, September 11, 2020   

    • 3D geometry
    • 10 replies
    • 540 views
    • 
    • Turtle
    • September 13, 2020

19. Multiple Timelines And The Strong Nuclear Force

    By VictorMedvil, September 10, 2020
    • 0 replies
    • 299 views
    • 
    • VictorMedvil
    • September 10, 2020

20. Nonchalance Force Vs Kinetic Momentum

    By Dubbelosix, September 9, 2020
    • 1 reply
    • 292 views
    • 
    • Dubbelosix
    • September 9, 2020

21. Maths And Self-Defence: Does My Formula Make Mathematical Sense?

    By Wannabelifeguard, August 30, 2020
    • 6 replies
    • 575 views
    • 
    • ScienceAndUniverse
    • September 9, 2020

22. Photons Repulsions

    By Simon4159870717, September 7, 2020   

    • diffraction
    • 0 replies
    • 441 views
    • 
    • Simon4159870717
    • September 7, 2020

23. Nikola Tesla Vs. The Second Law Of Thermodynamics 1 2 3 4 6

    By TomBooth, August 9, 2020
    • 91 replies
    • 3.8k views
    • 
    • Dubbelosix
    • August 31, 2020

24. An Unexpected Discovery

    By Dubbelosix, August 24, 2020
    • 7 replies
    • 662 views
    • 
    • Dubbelosix
    • August 28, 2020

25. The Einstain-Energy Drop

    By Dubbelosix, August 20, 2020
    • 4 replies
    • 471 views
    • 
    • Dubbelosix
    • August 21, 2020