Logarithmic helix ρ = a * e k θ
Archimedean spiral ρ= a *θ
Quadratic helix ρ=a*θ? (There are three spirals, etc. )
Fibonacci spiral is an iterative spiral with Fibonacci number 1, 1, 2, 3, 5 ... like a square with sides.
There are more spirals in three-dimensional space.
Spring helix, double helix structure of DNA, conical helix and so on. .