Invented by Charles F. Brush, the arc lamp
replaced gas lighting on Public Square on
April 29, 1879 (preceding Edison’s incandescent
light) – the first successful use
of an electric street-light system in the
world. This Art Nouveau, acorn-shaped
fixture on a hand-forged, wrought-iron
post was an arc lamp when installed in
1890. It was later changed to an incandescent
light.