The light that comes out is purple rather than blue because with the loss of some ... “The purple lights take an otherwise bland, average scene at night and creates something mystical and ...

While violet hits your eye with a specific wavelength, purple only exists in your perception — a clever construct built from ...

Yet there’s been a rise in recent years of reports that some streetlights are giving off a purple ... that filters blue wavelengths and ultimately produces a bright white light.

Question: I’m wondering about a light that seems to only be on at night on the traffic lights. It’s a small purple or blueish light that’s near the traffic lights. I’ve tried to figure out what its ...

A purple wave of faulty streetlights has swept across the USA, generating incorrect theories, bad lighting and fans of an accidental aesthetic.