Recent content by peter2108

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    Safe to remove inner wall of pond or will it burst?

    Safe to remove inner wall of pond or will it burst?? 1.Problem I have a fishpond. It is raised 0.4m above the ground, the wall being interlocking wooden blocks. The blocks are all locked together all the way round so they could be picked up and put down somewhere else. The pond is 2.4m long...
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    Partial derivatives of Gas Law

    In James Stewart's Calculus exercise 82 page 891 asks you to show that: \frac{\partial P}{\partial V}\frac{\partial V}{\partial T}\frac{\partial T}{\partial P} = -1 I can do this by noting that V = \frac{nRT}{P} so that: \frac{\partial V}{\partial T} = \frac{\partial}{\partial...
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    Calculating Pond Evaporation: Is Floating Glass a Good Idea?

    I have a fish pond which may have a slight leak. Or not - maybe the water is just evaporating. Searching it seems there is not simple way to calculate how fast water will evaporate. So suppose I put a glass beside my pond and measure how far the level of water in the glass has fallen in - say -...
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