POTD: Golden Spiral

POTD: Golden SpiralGolden Spiral Bozeman, Montana 2013

Conventional wisdom has it that some snail shells, like the nautilus shell, follow the shape of a golden spiral. The boring truth however seems to be that while these shells follow logarithmic spirals, roughly meaning they grow wider with every revolution and the rate of that growth is a constant, they typically do not exhibit the rate constant required to be a true golden spiral.]]>