In order to publicize the capabilities of General Electric’s lighting department and to solicit more contracts, lead engineer Walter Darcy Ryan came up with a spectacular lighting effect. He called it the “Scintillator.” It was showcased at Wonderland, a local amusement park and to illuminate Niagara Falls, and then appeared at international exhibitions and World’s Fairs in New York, Chicago, San Francisco, and elsewhere for the next quarter of a century. It was also used atop some buildings, and helped inspire the “searchlight” motif in Art Deco depictions of cities. Wanter Darcy Ryan had effectively invented the light show.