Purple Haze

Kodak’s recently discontinued Aerochrome color infrared film was developed by the U.S. military in the 1940s for camouflage detection. It reveals a part of the light spectrum that is invisible to the human eye, producing a unique color palette that artists, like Jimi Hendrix and Frank Zappa, would use for a psychedelic effect on album covers years later. (NPR’s Picture Show)