Plug in the Motion Lamp and the interior bulb heats up the liquid, causing it to swirl around the cylinder. The wax blobs collide, combine and stretch inside, causing a fascinating and groovy effect. This is a classic lamp that's been popular for decades and is sure to be so for many more to come. Colourful motion lamp Brightly coloured wax blobs swirl and float around inside Retro effect Mains powered Approx. 40cm tall