# Archimedean spiral

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Related to Archimedean spiral: Logarithmic spiral

## 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.
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References in periodicals archive ?
The Archimedean spiral (right) maintains a constant distance between coils.
Handzic started with Archimedean spirals and logarithmic spirals.
The Archimedean spiral is characterised by a constant convolution span.
2, we have F(a, [theta]) = a[theta], the Archimedean spiral.
If the merry-go-round starts to turn while you are walking on it, someone watching you who is not on the merry-go-round, would see you moving around an Archimedean spiral.
In this case, however, a logarithmic spiral geometry was analyzed, which is quite different from the Archimedean spiral investigated by Krein et al.
The Archimedean spiral centerline is represented by the parametric equations:
The complex flow in an Archimedean spiral disk extruder has been analysed in details about a decade ago by Krein et al.
The Web site mentioned that the engineers utilised hyperbola patterns and Archimedean spirals to create patterns on single hair strands.
After this operation, follows a chemical film development the which 1 have the effect of dissolving both the polymer as well as the aluminum foil in irradiated area, on polyethylene strip remaining two half LC oscillating circuits in mirror, the two coils being in the form of two identical plane spirals, the Archimedean spirals, each of them having a disc in the center which is an armature of the oscillating circuit capacitor, figure 2.
Let me give you an example: If the Spirals had been Archimedean spirals, where the spiral turns at a consistent rate outward from its center, they'd be uninteresting, experientially, in terms of both space and time; they'd be knowable and predictable.

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