Recent content by InvalidState

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    Graduate (Gases) How to get dU=(PdV+VdP)/(gamma-1) from U=PV/

    Ah yes of course! Thanks
  2. I

    Graduate (Gases) How to get dU=(PdV+VdP)/(gamma-1) from U=PV/

    Hello I'm reading Feynman here: http://www.feynmanlectures.caltech.edu/I_39.html I'm having problems understanding how he turns equation 39.11 into 39.12. He does some U -> dU trick and he turns: U=PV/(\gamma-1) into dU=(PdV+VdP)/(\gamma-1) I don't understand this intuitively. Any help...
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    Software for "connecting" and plotting multiple equations

    Hello Right now I'm going through Feynmans lectures and sometimes the equations really get tons of substitutions so you must look back at where something fits a lot. So my question: is there some software in which you can input multiple (simple) equations and place them around like a "mind...