Physics

3543 topics in this forum

1. What is time? (Again) 1 2 3 4 19

   By The victorious truther, July 11, 2020
   • 463 replies
   • 393.9k views
   • 
   • Halc
   • November 30, 2020

2. Does aluminum foil block x-rays?

   By greree, June 2, 2009
   • 10 replies
   • 127.9k views
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   • uranium238
   • May 25, 2010

3. What's The Point Of Calculus?? 1 2

   By CuriosOne, October 11, 2020
   • 48 replies
   • 105.3k views
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   • Ni Mimi.
   • July 22, 2022

4. Best material to absorb heat and then slowly radiate that heat

   By parsson, October 17, 2013
   • 5 replies
   • 93.3k views
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   • DaMeatMan
   • January 11, 2014

5. A piece of metal under the hot sun...

   By Externet, September 22, 2008
   • 15 replies
   • 90.8k views
   • 
   • swansont
   • September 26, 2008

6. Calculating mixed water temperature

   By kybert, February 13, 2006
   • 17 replies
   • 80.9k views
   • 
   • knyazik
   • October 22, 2014

7. Why does wet cold air feel so much colder than dry cold air? 1 2

   By CaptainPanic, July 25, 2008
   • 36 replies
   • 80.2k views
   • 
   • J.C.MacSwell
   • October 25, 2014

8. What materials can X-Rays not pass through?

   By bridgey, April 17, 2006
   • 17 replies
   • 75.5k views
   • 
   • Bill Angel
   • July 10, 2015

9. Thought experiment: how would physics develop without Einstein? 1 2

   By Duda Jarek, August 11, 2020
   • 45 replies
   • 75.4k views
   • 
   • Phi for All
   • September 18, 2020

10. Resistance of capacitor 1 2 3

    By Primarygun, May 9, 2007
    • 59 replies
    • 69.3k views
    • 
    • Mike Smith Cosmos
    • November 16, 2014

11. Why an Airplane Flies (Bernoulli's Principle vs. Newton's Third Law) 1 2 3 4 9

    By antimatter, July 14, 2008
    • 206 replies
    • 63.7k views
    • 
    • imatfaal
    • December 9, 2014

12. Problem with Carbon 14 radiometric dating

    By Griffon, December 29, 2008
    • 17 replies
    • 62.6k views
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    • Ophiolite
    • February 17, 2016

13. Materials with a high heat retention

    By mhasson, May 16, 2011
    • 14 replies
    • 52.8k views
    • 
    • Enthalpy
    • August 25, 2012

14. Why does mass curve space-time? 1 2 3 4 8

    By Incendia, November 21, 2010
    • 194 replies
    • 51.3k views
    • 
    • TheGeckomancer
    • December 1, 2015

15. Unanswered questions

    By paragaster, January 23, 2017
    • 7 replies
    • 51.3k views
    • 
    • J.C.MacSwell
    • February 3, 2017

16. surviving free fall into the water from high altitude 1 2

    By Comandante, June 4, 2010
    • 31 replies
    • 50.1k views
    • 
    • taeto
    • October 7, 2018

17. questions about dark matter 1 2

    By boo, September 18, 2019
    • 33 replies
    • 48.9k views
    • 
    • Janus
    • October 19, 2019

18. Paper tower! Not easy!

    By grayfalcon89, September 3, 2007
    • 18 replies
    • 42.2k views
    • 
    • iNow
    • September 8, 2007

19. is voltage directly proportional to current? [Answered: YES]

    By paul, December 2, 2008
    • 3 replies
    • 38.9k views
    • 
    • swansont
    • December 2, 2008

20. The meter-second (moved from general discussion)

    By zebov, February 10, 2006
    • 24 replies
    • 37.8k views
    • 
    • JamesPT
    • January 21, 2020

21. Source of All 1 2

    By TimeFlies, October 17, 2020
    • 26 replies
    • 37.1k views
    • 
    • Phi for All
    • October 19, 2020

22. Copenhagen Interpretation? 1 2

    By Anchovyforestbane, November 17, 2020
    • 29 replies
    • 36.5k views
    • 
    • studiot
    • November 23, 2020

23. how many watts does it take to kill?

    By the guy, January 22, 2010
    • 8 replies
    • 35.7k views
    • 
    • John Cuthber
    • January 23, 2010

24. Diamond sword that can cut through anything? 1 2

    By Hypercube, December 2, 2011
    • 29 replies
    • 35.1k views
    • 
    • M>stic_InC
    • November 9, 2017

25. Help With egg launcher

    By lerix, May 20, 2006
    • 5 replies
    • 34.3k views
    • 
    • CaptainPanic
    • January 25, 2008