The Bubble Lamp (1952) began as a contemporary version of silk-covered ball pendant lights. Inspired by the process the military used to mothball ships, design director George Nelson fashioned a circle from steel wire, placed it on a spinning turntable, and then shot translucent plastic at the sphere until it was fully covered. Thus, the first "Nelson ball light" was born. Bulb (not included): LED, CFL, or incandescent; E26 base; 60W max for small, 150W max for others. UL Listed.