There was no visible wood grain in the print, and its shape indicated it was taken from a curved surface, not a flat one.

BBC: Fingerprint evidence is fallible

The projection provided a solution to a puzzle that had troubled mapmakers since the world was recognized as a sphere: How does one represent the curved surface of the globe on a flat chart?

WSJ: Lost in Our Maps: A History of Cartographic Catastrophes

In particular, the processes by which the circuit pattern is first projected on to a chip's surface lithographically, and then etched on to it chemically, will need to be altered to take account of the fact that the surface is curved.

ECONOMIST: Semiconductors

In 1969 he created a new curved ice ax, the Piolet, which gave climbers better purchase, say, on the smooth surface of a frozen waterfall.

FORBES: The World According to Yvon