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
Royal Scottish Society of Painters in Watercolour Barbara Rae. Past presidents include William J L Baillie (1975–1988), Ian McKenzie Smith (1988–1998), Philip T L Reeves (1998–2005), John Inglis (2005–2016); the current president is Jim Dunbar. Past vice presidents include Alison Dunlop, Helga Chart, Gregor Smith and Iona Montgomery. Royal Scottish Society of Painters in Watercolour The Royal Scottish Society of Painters in Watercolours (RSW) is a Scottish organisation of painters. It was founded in 1876, with the support of the Royal Scottish Academy, by artists to "promote, through exhibition, the medium of watercolour and encourage the bold, free and colourful qualities of Scottish Painting." The society received