Why are candle flames yellow? Why does ultraviolet light supposedly kill vampires? What about the monocle? Why was the monocle--a corrective lens that only corr

A collection of engaging essays that discusses odd and unusual topics in optics

Medusa, the Gorgon, who turns those who gaze upon her to stone, is one of the most popular and enduring figures of Greek mythology. Long after many other figure

The counter-intuitive aspects of quantum physics have been long illustrated by thought experiments, from Einstein's photon box to Schrödinger's cat. These expe

The first biography of David Lack, the father of evolutionary ecology and an acclaimed ornithologist