| 单词 | spiral of archimedes |
| 释义 | spiral of Archimedes in British Englishnoun mathematics a spiral having the equation r = aθ, 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 spiral of Archimedes in American Englishnoun 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 Word origin [1650–60; named after archimedes]This word is first recorded in the period 1650–60. Other words that entered Englishat around the same time include: oscillation, parade, pony, profile, romantic |
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