Illustration of the optical phenomenon called a Brocken spectre. From Camille Flammarion's L' atmosphere meteorologie populaire, 1888. A Brocken spectre (also called Brocken bow or mountain spectre) is the magnified and apparently enormous shadow of an observer cast upon clouds opposite the Sun's direction. The figure's head is often surrounded by the halo-like rings of coloured light forming a glory, which appears opposite the Sun's direction when uniformly-sized water droplets in clouds refract and backscatter sunlight. This illustration is based on the account of a traveller called Hane. He and a companion climbed the Brocken, the tallest peak in Germany's Harz mountains, on 23 May, 1797. The Brocken spectre was first observed and described by Johann Silberschlag in 1780. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Science Source |
Bildgröße: | 2520 px × 3948 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |