In 1879, an inventor kept a carbon-filament bulb glowing for hours, and electric light began changing life after dark

Thomas Edison's 1879 breakthrough with a long-lasting carbon filament bulb revolutionized electric lighting, moving it from experimental to practical. This innovation enabled homes, businesses, and cities to extend activities beyond daylight, fundamentally altering daily routines and urban life. The reliable bulb sparked a demand that accelerated electrification, shaping modern society by making night more productive and accessible.