Physics and Mathematics

2,523 topics in this forum

1. Mathematician untangles legendary problem

   By C1ay, March 18, 2005
   • 3 replies
   • 1.2k views
   • 
   • Turtle
   • March 18, 2005

2. I can't spell Fibinacci

   By bumab, March 17, 2005
   • 11 replies
   • 2k views
   • 
   • Qfwfq
   • March 18, 2005

3. Perpetual Motion: Super Conductive Magnets. 1 2

   By Dark Mind, February 15, 2005
   • 32 replies
   • 7.9k views
   • 
   • Qfwfq
   • March 18, 2005

4. Electricity effect

   By tarak, March 11, 2005
   • 4 replies
   • 2.1k views
   • 
   • Qfwfq
   • March 17, 2005

5. Period of nonlinear and nondamped pendulum?

   By Tim_Lou, March 14, 2005
   • 3 replies
   • 1.6k views
   • 
   • C1ay
   • March 16, 2005

6. Trigonometry identity

   By User2983, March 13, 2005
   • 5 replies
   • 2.2k views
   • 
   • Qfwfq
   • March 15, 2005

7. Magnetic Levitation and Gyroscopes

   By rectangleboy, March 13, 2005
   • 3 replies
   • 7.4k views
   • 
   • Qfwfq
   • March 15, 2005

8. A different kind of string theory question...

   By mmotion, March 12, 2005
   • 4 replies
   • 1.5k views
   • 
   • OpenMind5
   • March 14, 2005

9. Mass of a Tachyon

   By Aki, March 13, 2005
   • 6 replies
   • 1.9k views
   • 
   • sanctus
   • March 14, 2005

10. Representation

    By sanctus, March 11, 2005
    • 2 replies
    • 1.2k views
    • 
    • sanctus
    • March 14, 2005

11. String Theory question...

    By maddog, March 11, 2005
    • 6 replies
    • 1.8k views
    • 
    • Bo
    • March 14, 2005

12. Lim x--> + or - infinity f(x)

    By Tim_Lou, September 10, 2004
    • 11 replies
    • 8k views
    • 
    • maddog
    • March 12, 2005

13. How does one prove Goodstein's Theorem ?

    By maddog, March 11, 2005
    • 2 replies
    • 4.3k views
    • 
    • Qfwfq
    • March 11, 2005

14. Perpetual motion 1 2 3

    By scorpio_fl, February 3, 2005
    • 37 replies
    • 9.5k views
    • 
    • Qfwfq
    • March 11, 2005

15. What do these numbers mean? 1 2

    By Buffy, March 3, 2005
    • 30 replies
    • 5.2k views
    • 
    • maddog
    • March 11, 2005

16. Math question

    By User2983, March 10, 2005
    • 1 reply
    • 1.7k views
    • 
    • Tim_Lou
    • March 11, 2005

17. Math problem: two unknown numbers, known product and sum

    By MortenS, March 8, 2005
    • 10 replies
    • 36.2k views
    • 
    • MortenS
    • March 10, 2005

18. Better speed of light

    By FrankM, March 8, 2005
    • 7 replies
    • 1.5k views
    • 
    • FrankM
    • March 10, 2005

19. Forever time dilation!?! 1 2

    By matrixscarface, March 1, 2005
    • 19 replies
    • 3.5k views
    • 
    • DivineNathicana
    • March 9, 2005

20. General Relativity weak postulate TESTED!

    By UncleAl, March 3, 2005
    • 5 replies
    • 2.2k views
    • 
    • UncleAl
    • March 9, 2005

21. Some Physic Questions

    By nokhin12, March 8, 2005
    • 1 reply
    • 2.5k views
    • 
    • Qfwfq
    • March 8, 2005

22. Number Theory New Discoveries

    By Turtle, March 6, 2005
    • 4 replies
    • 6.6k views
    • 
    • Turtle
    • March 8, 2005

23. Ax+by=c; dx+ey=f

    By DivineNathicana, March 4, 2005
    • 3 replies
    • 7.6k views
    • 
    • Bo
    • March 4, 2005

24. One Line, A Thousand Points

    By DivineNathicana, March 1, 2005
    • 11 replies
    • 2.7k views
    • 
    • Bo
    • March 4, 2005

25. The Riemann hypothesis

    By matrixscarface, February 26, 2005
    • 6 replies
    • 3.4k views
    • 
    • Bo
    • March 4, 2005