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Period of a nonlinear pendulum
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The term “nonlinear pendulum” is analogous to a retronym, a new name for an old thing to distinguish it from a new variation. For example, once upon a time a guitar was just a guitar. Now such a guitar is called an acoustic guitar to distinguish it from an electric guitar. Similarly, analog signal processing […] The post Period of a nonlinear pendulum first appeared on John D. Cook.
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