What Is A Fractal?
Fractals are non-regular geometric shapes that are self similar. Self-similar means that a smaller section of it resembles the larger whole.
These fractals can also be described as never ending patterns, as the smaller the scale we go the same patterns keep emerging.
These fractal patterns are one of the few things that is easy to explain & to understand but very difficult to implement in such a way that the end result doesn't look like it was made by your 6 month old nephew.