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
Medal of the Royal Numismatic Society Medal of the Royal Numismatic Society The Medal of the Royal Numismatic Society was first awarded in 1883. It is awarded by the Royal Numismatic Society and is one of the highest markers of recognition given to numismatists. The President and Council award the Medal annually to an "individual highly distinguished for services to Numismatic Science". In recent years the Medallist has been invited to receive the medal in person and to give a lecture, usually at the Society's December Meeting. Sir John Evans gave the dies for the original silver medal to the Society in 1883. The current medal