Purple streetlights cast a mysterious, eerie and fleeting glow across the nation
A purple wave of faulty streetlights has swept across the USA, generating incorrect theories, bad lighting and fans of an ...
Hosted on MSN2mon
Why Are Some Streetlights Purple?
One LED supplier, Acuity, took note of the change and offered an explanation: “The referenced ‘purple light’ effect is due to a spectral shift caused by phosphor displacement seen years ...