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Two examples of fluorescent blacklight bulbs with light fixtures and packaging and a novelty incandescent bulb. Although blacklights date to 1903 with the development of the optical filter glass Wood's glass, fluorescent ink was not developed until 1932 when the Switzer brothers were inspired by a Popular Science magazine article to experiment in their father's pharmacy.
The brothers established the Fluor-S-Art Co. in 1934 to develop and sell black light paints for advertising purposes. [ 3 ] [ 4 ] They later partnered with Continental Lithograph (a subsidiary of Warner Brothers Pictures ) of Cleveland, Ohio, to develop fluorescent paints for movie posters and advertising displays. [ 5 ]
A blacklight, also called a UV-A light, Wood's lamp, or ultraviolet light, is a lamp that emits long-wave ultraviolet light and very little visible light. [ 1 ] [ 2 ] [ 3 ] One type of lamp has a violet filter material, either on the bulb or in a separate glass filter in the lamp housing, which blocks most visible light and allows through UV ...
Some coupons and tickets use colorful black light inks. On many German locomotives the control panel labels were printed with black light paint and a black light source was provided in the cab. This left the driver with full night vision while still enabling him to distinguish between the different switches and levers to operate his locomotive.
Examples of other psychedelic art material are tapestry, blacklight posters printed with fluorescent ink against backgrounds of velvet black which are intended for display under an ultraviolet lamp which causes the colors to glow in the dark, paisley printed cloths, tie-dyed or batiked curtains and stickers with designs and slogans written in ...
American head shops originated in the 1960s in cities with high concentrations of college-age youth, often growing out of independently owned poster or candle stores. Historically, U.S. head shops proliferated on St. Mark's Place in New York City 's East Village , in West Los Angeles , in San Francisco 's Haight-Ashbury neighborhood, and in ...