Spirals

This crossword clue is for the definition: Spirals.
it’s A 7 letters crossword puzzle definition.
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Last seen on: LA Times Crossword 24 Jul 19, Wednesday

Random information on the term “Spirals”:

Fermat’s spiral (also known as a parabolic spiral) was first discovered by Pierre de Fermat, and follows the equation

in polar coordinates (the more general Fermat’s spiral follows r 2 = a 2 θ {\displaystyle r^{2}=a^{2}\theta } ).


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It is a type of Archimedean spiral.

As a parametric equation, the formula is

Here, sgn(a) denotes the sign function of a. By parametric equation implicitization, this isn’t so difficult, as r 2 = a 2 θ {\displaystyle r^{2}=a^{2}\theta } can be turned into r = | a | ⋅ θ 1 / 2 {\displaystyle r=|a|\cdot \theta ^{1/2}\,} . And,

Spirals on Wikipedia