PALMDALE, Calif.--(BUSINESS WIRE)--U.S. Architectural Lighting, a leading U.S.-based manufacturer of contemporary outdoor lighting solutions, is pleased to announce the expansion of its AXIM Series ...
MR. HUGH NICOL'S explanation (NATURE, May 3, p. 671) of atmospheric light columns from artificial lights is not merely an extension of mine but an alternative. My explanation, the orthodox one, is ...
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