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spiral of Archimedes
noun
, Geometry.
- a curve that is the locus of a point that moves outward with uniform speed along a vector, beginning at the origin, while the vector rotates about the origin with uniform angular velocity. Equation (in polar coordinates): r = aθ.
spiral of Archimedes
noun
- maths a spiral having the equation r = a θ, where a is a constant. It is the locus of a point moving to or from the origin at a constant speed along a line rotating around that origin at a constant speed
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Word History and Origins
Origin of spiral of Archimedes1
First recorded in 1650–60; named after Archimedes
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Example Sentences
Propositions 1-11 are preliminary, 13-20 contain tangential properties of the curve now known as the spiral of Archimedes, and 21-28 show how to express the area included between any portion of the curve and the radii vectores to its extremities.
From Project Gutenberg
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