"The first motion lamp was designed in 1963 by an English engineer, Edward craven Walker, who marketed it under the name Astro lamp. In 1965, two American entrepreneurs saw the Astro lamp displayed at a trade show in Brussels, bought the rights to market the lamp worldwide and formed the lava Corporation in Chicago. The Astro lamp was renamed the Lava Lamp and an icon was born. Watch the different-sized formations of melted wax collide, Flow, and split apart as they ooze their way up and down the glass globe. Provides relaxing, soft light, 25 watt light bulb included. Plugs into a power outlet."