Famous Thomas Edison Bulb Light Fixture 2023. Prior to this, candles and gas lamps were used as sources of artificial lighting. Homes, where there are 500 million recessed downlights.

Web the war of the currents was a series of events surrounding the introduction of competing electric power transmission systems in the late 1880s and early 1890s. In fact, some records suggest swan demonstrated his bulb slightly before edison. Prior to this, candles and gas lamps were used as sources of artificial lighting.