Apologies for the vagueness of the question, I'll clean it up once an answer helps me describe it better.
I'm fascinated by the pattern demonstrated in this image. It's made up of dots on a series of concentric circles. The angles used, number of dots on each circle and circle sizes cause a spiral pattern to emerge.
Is there a name for this or a combination of principles at play here? I'm interested in the mathematics of it, and how such an image might be defined in equations.
Image credit: the talented fellow at http://dotboydesigns.vpweb.com.au