Nautilus shell X-ray and logarithmic spiral
Description:
An X-ray of a chambered nautilus shell shows similar properties to the logarithmic spiral which is a graph of a solution of the differential equation dr/d?=br. (X-ray courtesy of C. C. Jones, Union College, Schenectady, NY. “Logarithmic Spiral” courtesy of Eric W. Weisstein, from MathWorld - A Wolfram Web Resource.)
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Nautilus shell X-ray and logarithmic spiral
Alt text:
Nautilus shell X-ray and logarithmic spiral.
Caption:
An X-ray of a chambered nautilus shell shows similar properties to the logarithmic spiral which is a graph of a solution of the differential equation dr/dθ=br. (X-ray courtesy of C. C. Jones, Union College, Schenectady, NY. “Logarithmic Spiral” courtesy of Eric W. Weisstein, from MathWorld - A Wolfram Web Resource.)
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2009
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