The invention of the electric light bulb changed the world. It enables human activity at all times of day or night, and in all ambient light conditions. The first commercially available bulbs were released in 1880, manufactured by Thomas Edison’s company, the Edison Electric Light Company. The resulting demand for electric lighting propelled the building of vast electrical distribution infrastructure to bring power to homes and businesses in the following decades.
The effects of lighting have a significant impact on human productivity, psychology, and mood. The challenge in lighting design is to create an illuminated environment that supports human activity while being equal parts ergonomic, aesthetic, and energy efficient.