Plasma

this is one equation. hold it.

a live fragment shader — your finger warps the field

Every color in this image comes out of one equation, evaluated fresh at each point and each instant — there’s no particle system or physics sim layered underneath, just that formula. What looks like a swirl or a ripple is the same numbers responding to one more input, which is why the whole field moves together instead of some separate effect happening on top of it.

Concepts: fields, color.

An interactive you play with one thumb, on Wundr.