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It's generated incorrect theories, potentially dangerous lighting and fans of an accidental aesthetic ... streetlights that were producing the purple light, using both microscopic and thermal ...
The aim is visibility, not aesthetics, and rarely will streetlamps ... “The referenced ‘purple light’ effect is due to a spectral shift caused by phosphor displacement seen years after ...
The same company behind the purple beam atop Golden 1 Center was doing a demonstration of its mobile beam van.