Precision is the silent hero behind every pattern.' Robbie shared this clip of him using instruments to create Celtic knots and ornamental patterns. ''Part of my process for designing a new piece ...

One of the first studies of fractals came from a surprising and weird phenomenon that occurs when you try to measure a coastline.

The pupillary distance (PD) measurement is a requirement for people who want to purchase eyeglasses. Here, find out how to measure your PD using a mirror and a ruler. Share on Pinterest Some eyewear ...

This story originally appeared on Ars Technica, a trusted source for technology news, tech policy analysis, reviews, and more. Ars is owned by WIRED's parent company, Condé Nast. Cooking instructions ...