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| The Cenotaph (with the A-bomb dome in the background) in Hiroshima. With a bit of imagination, we can even see "calculus" around us. The edges of the cross section may look parabolic, but in fact, they may well be an inverted catenary (the shape of a chain held hanging from its two ends). The catenary and the parabola look similar, but are decribed by different functions. If you still want more ask your nearest mathematician (or the web). |