At a glance, a painting by Jackson Pollock (1912 – 1956) can look deceptively accidental: just a quick flick of color on a canvas.
A quantitative analysis of Pollock's streams, drips, and coils, by Harvard mathematician L. Mahadevan and collaborators at Boston College, reveals, however, that the artist had to be slow—he had to be deliberate—to exploit fluid dynamics in the way that he did.