What is Lava lamp?
{{redlinks|date=December 2020}} {{Use British English}} [[File:Lava_lamps_(16136876840).jpg|thumb|Lava lamps of several different colours]] [[File:1990s_Mathmos_Astro.jpg|thumb|An original [[Mathmos]] ''Astro'' lava lamp]] A '''lava lamp''' is a decorative [[lamp]], invented in 1963 by [[British]] [[entrepreneur]] [[Edward Craven Walker]], who made the lighting company [[Mathmos]]. The lamp usually takes 2 to 6 hours to heat up, but this also depends on the light bulb which is heating the wax. The lamps are designed in a variety of styles and colours, for example, a mixture of blue and red. The wax inside usually reflects the colours. {{stub}} [[Category:Lamps]]