Mathmos
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Mathmos is an English company that sells lighting products, most famously its numerous lava lamp models.
The lava lamp was invented around 1963 by Edward Craven Walker. The rights to produce and sell the lamp on the American market were sold to Haggerty Enterprises in 1966 and the lamp became an icon of its decade. Sales collapsed in the 1970s and did not revive until the 1990s. In 1989 Cressida Granger and David Mulley acquired the lapsed rights to produce the lamp from Walker. They reformed Walker's original company, Crestworth, situated in Poole, Dorset, but changed the name to Mathmos in 1992. It sells various lava lamps and other lighting accessories.
The name comes from the 1968 film Barbarella. Mathmos (or matmos) refers to a seething lake of evil slime beneath the city Sogo.