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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...

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 ...

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

How the Ray Gun Got Its Zap is a collection of essays that discusses odd and unusual topics in optics. Though optics is a fairly specialized branch...