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Daily Archives: 1-February-2014
I love proofs without words. Usually, I see them in discussions of mathematical concepts like the Pythagorean theorem (examples). While reading about home construction at the Journal of Light Construction, I saw a nice graphical look at the difference between the gross margin on a product and the markup on a product. Continue reading
It is cold in Minnesota right now and I hear the local motorheads warning people not to run their gas tanks down to empty. During winter, I hear this warning because of concerns that water vapor in the gas tank may freeze and cause the vehicle to stop. I also hear concerns about running on a low fuel tank during the heat of summer because the fuel is need to cool the fuel pump, which is often mounted in the tank. Some folks also say that there is corrosion at the bottom of the gas tank that get sucked into the fuel pump when running the tank near empty. Continue reading