arithmetic spiral
English
Etymology
It is a spiral whose equation in polar coordinates is linear, which would thus, when quantized, yield an arithmetic progression.
Noun
arithmetic spiral (plural arithmetic spirals)
- (mathematics) Synonym of Archimedean spiral.
- The Parker spiral is the shape of the Sun's magnetic field as it extends through the solar system. Unlike the familiar shape of the field from a bar magnet, the Sun's extended field is twisted into an arithmetic spiral by the magnetohydrodynamic influence of the solar wind.[1]