About Lightning Bolt
Out near c ≈ −1.315 + 0.074i, the Mandelbrot set thins into a delicate lattice of dendrites — narrow filaments that branch and re-branch like bolts of static electricity. These structures form along the boundaries of period-doubling cascades, where the set itself is no longer a connected blob but a Cantor-like web of fine threads. The neon palette in Mandelbro is tuned for this kind of high-contrast filament work, with vivid color cycling that makes each branch jump off the dark background. Try zooming a few orders of magnitude in: you will find that every bolt eventually terminates in another, smaller minibrot.
About the Mandelbrot set
The Mandelbrot set is the set of complex numbersc for which the iteration zn+1 = zn2 + c does not escape to infinity. Its boundary is a fractal of infinite detail: every region you zoom into reveals new spirals, dendrites, and miniature copies of the entire set. Lightning Bolt is one of the most recognizable patterns in this boundary.
How Mandelbro renders this view
At this zoom level, Mandelbro uses standard double-precision rendering with a parallel pool of Web Workers — every CPU core in your device runs the escape-time algorithm in parallel on a slice of the viewport. Push the zoom another twelve orders of magnitude in and the renderer automatically switches to its perturbation pipeline, which uses one high-precision reference orbit to keep deep zooms sharp. See how Mandelbro works for the full explanation.