Archimedean spiral

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Archimedean spiral

[¦är·kə¦mēd·ē·ən ′spī·rəl]
(mathematics)
A plane curve whose equation in polar coordinates (r, θ) is rm = am θ, where a and m are a positive or negative integer.
References in periodicals archive ?
The fourth form of the curve C is an Archimedes spiral surface (figure 4,b).
SVD and other motion-dependent rendering technologies (like full- and half-rotating screens, rotating Archimedes spirals, spiral screens, etc.
His major achievements are explained, including the measuring of pi, formulae for finding the areas of circles and cones, Archimedes spirals and the famous lever that could move the world.