(mathematics) A graphical depiction of the set of prime numbers, constructed by writing the positive integers in a square spiral and specially marking the primes.

plural of Knochenhauer spiral

Either of a pair of spirally wound conductors with metal balls at their ends. Placing one above the other forms an induction coil.

Synonym of Riess spiral

plural of Riess spiral

plural of purity spiral

The situation in which members of an ideological group become increasingly zealous and intolerant, eventually turning on other members.

(economics) A pattern of economic inflation in which higher wages lead to higher prices, which lead to higher wages, and so on.

The spiralling motion of water caused by Langmuir circulation.

plural of Langmuir spiral