Definition of logarithmic spiral in English:

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logarithmic spiral

Pronunciation: /ˌlôɡəˈriT͟Hmik/ Pronunciation: /ˌläɡəˈriT͟Hmik ˈspīrəl/


A spiral such that the angle between the tangent and the radius vector is the same for all points of the spiral. Also called equiangular spiral.
Example sentences
  • Kollerstrom took us on a journey through sacred geometry, symmetry, fractals, latent pentagrams and logarithmic spirals, illustrated with aerial shots of his favourite crop circles.
  • He also investigated caustic curves and in particular he studied these associated curves of the parabola, the logarithmic spiral and epicycloids around 1692.
  • He exhibited the logarithmic spiral as the stereographic projection of a loxodrome on a sphere, a projection he proved to be conformal.

For editors and proofreaders

Syllabification: log·a·rith·mic spi·ral

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