Electric light by the first practical electric arc light in 1806. By the 1870s, Davy's arc lamp had been successfully commercialized, and was used to light many public spaces. The development of a steadily glowing filament suitable for interior lighting took longer, but by the early twentieth century inventors had successfully developed options, replacing the arc light with incandescents. The energy efficiency of electric lighting has increased radically since the first demonstration of arc lamps and the incandescent light bulb of the 19th century. Modern electric light sources come in a profusion of types and sizes adapted to many applications. Most modern
Light Years, The Very Best of Electric Light Orchestra Light Years, The Very Best of Electric Light Orchestra Light Years, The Very Best of Electric Light Orchestra is a two CD compilation album by Electric Light Orchestra (ELO). The album celebrates the band's 25th Anniversary singles career starting in 1972 and contains all of ELO's 29 UK hit singles plus other single edits that either didn't chart or were hits in other countries. All the songs included are the edited 7" single versions. It is also the first ELO compilation to feature the song "Across the Border" which was scheduled to be released as an EP track in 1980