In just such a moment in real life, scientists from Canada observed unexpected flashes of curved green light from a red light-emitting polymer above its surface.

REFERRING to Sir Oliver Lodge's conviction that the green flash at sunset is mainly physiological (NATURE, Dec. 3, p. 807), I would point out that this does not explain the appearance at sunrise.

A green flash can occur at either sunrise or sunset but is more easily observable during the latter. On a cloudless evening, Earth’s atmospheric sunlight distortion is most pronounced when the sun is ...

I HAVE read Prof. Worley's letter with interest, and can agree with him that the green flash is by no means a rare phenomenon. On a recent trip to the West Indies, I saw it three times out of a ...