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1 March 1992 Optics in the atmosphere: what happened in the skies of St. Petersburg on 18 June 1790
Robert G. Greenler
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Proceedings Volume 1603, Education in Optics; (1992) https://doi.org/10.1117/12.57868
Event: Education in Optics, 1991, Leningrad, Russian Federation
Abstract
There is a published, eyewitness record of a complex display of circles, arcs, and spots of light in the sky over St. Petersburg in 1790. The display can be explained as resulting from the reflection and refraction of light by small, air-borne ice crystals
© (1992) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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Robert G. Greenler "Optics in the atmosphere: what happened in the skies of St. Petersburg on 18 June 1790", Proc. SPIE 1603, Education in Optics, (1 March 1992); https://doi.org/10.1117/12.57868
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KEYWORDS
Crystals
Sun
Prisms
Atmospheric optics
Photography
Computer simulations
Refraction
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