Recent content by Kibble

  1. K

    Thermodynamic systems: spot the invalid fundamental equation

    Yeah! The issue is that it would require entropy less than zero.. which may be problematic for lots of other reasons. I got carried away by math and stopped thinking about the physical implications. In chatting with some of my peers, we eventually came to the conclusion that i) was okay but...
  2. K

    Thermodynamic systems: spot the invalid fundamental equation

    Late reply, but try checking postulate 4 on (i). When I put it into mathematica, I got a non-zero solution for S. $$u1 = \frac{v0 \theta}{R} \frac{S^2}{V} e^{\frac{S}{n R}};$$ Solve[D[u1, S] == 0, S] {{S -> 0}, {S -> -2 n R}}
  3. K

    Insights Interview with a Physicist: David J. Griffiths - Comments

    I may be alone in this, but I find this statement troublesome: The language he uses here, and throughout the interview, seems to reinforce the rift between the lay-person and the scientist. While it is certainly true that some physical concepts require a lot of math to fully develop, it is...
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