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 Society of Biology society, previously called the Society of Biology, was granted permission to become the "Royal Society of Biology". The society is also a registered charity. The first president of the society was Nancy Rothwell (University of Manchester) and the current president is Julia Goodfellow. The society has six Special Interest Groups: the Animal Science Group, UK Biology Competitions, Natural Capital Initiative, the UK Plant Sciences Federation, Biology Education Research Group and Heads of University Biosciences. The Royal Society of Biology supports university students and early-career researchers with careers advice, travel grants and Life Sciences Careers Conferences. In 2012 it developed a