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.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Wolfe, "A note on the difference between equiangular and Archimedes spiral antennas (correspondence)," IRE Trans.
Figure 1 illustrates a common graphene nanoscroll (perfect scroll-like Archimedes spiral) whose length L (length of Archimedes spiral) is given by
The fourth form of the curve C is an Archimedes spiral surface (figure 4,b).
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.