Abstract
For many eras in man’s history, the sky has been occupied by various gods, or constellations, or birds, mythical or real. A new concept has arisen in the last few years, largely a product of aviation and balloonry, and civil air defense spotters. In general the reports have more psychological than physical significance. However, certain optical phenomena are now gaining far wider interest than among research men in optics. Some “authentic reports” by “reliable, competent observers” are recounted and considered. While complete interpretation of all “reports” is impossible, due to lack of sufficient experimental data, NO evidence exists for any phenomena not explicable by standard physical concepts.
© 1953 Optical Society of America
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