Oct 10, 2018

There are a variety of poetic curves in mathematics, and spirals are one of the more special ones. The term spiral is derived from Greek, and its original meaning is "spinning" or "winding". For example, a planar spiral is a curve formed by winding a circle at a fixed point. More than 2,000 years ago, the ancient Greek mathematician Archimedes studied the spiral. The famous mathematician Descartes first described the logarithmic spiral in 1683 and listed the analytical formula of the spiral. More interesting is that the Swiss mathematician Yagu Bernoulli, before his death, asked someone to engrave a snail house on his tombstone - a logarithmic spiral, and humorously wrote "I will change as it is." After the resurrection of the epitaph.

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