Date of POTD: 2013-11-06
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A mandelbulb is a three-dimensional analogue of the Mandelbrot set, a mathematical set of points whose boundary is a distinctive and easily recognizable two-dimensional fractal shape. This image, for the iteration z ↦ z8 + c, is rendered with a volumetric ray tracing and path tracing global illumination algorithm in the Corona renderer. It took about 70 hours to completely render.
Image: Ondřej Karlík