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
A Crude Awakening: The Oil Crash A Crude Awakening: The Oil Crash A Crude Awakening: The Oil Crash is a 2006 documentary film about peak oil, produced and directed by Basil Gelpke and Ray McCormack. "A Crude Awakening: The Oil Crash" explores key historical events, data and predictions regarding the global peak in petroleum production through interviews with petroleum geologists, former OPEC officials, energy analysts, politicians, and political analysts. The film contains contemporary footage interspersed with news and commercial footage from the growth heyday of petroleum production. The documentary focuses on information and testimony that supports the projection of a near-term oil production peak. The documentary