Royal Geological Society of Cornwall Royal Geological Society of Cornwall The Royal Geological Society of Cornwall is a geological society based in Penzance, Cornwall in the United Kingdom. It was founded in 1814 to promote the study of the geology of Cornwall, and is the second oldest geological society in the world, after the Geological Society of London which was founded in 1807. The first President of the society was Davies Gilbert, the first Secretary John Ayrton Paris, and other notable members include Humphry Davy (some of whose papers are held by the Society), and William Gregor, who discovered titanium. The society's first premises was
Electric light electric lighting is powered by centrally generated electric power, but lighting may also be powered by mobile or standby electric generators or battery systems. Battery-powered light is often reserved for when and where stationary lights fail, often in the form of flashlights, electric lanterns, and in vehicles. Types of electric lighting include: Different types of lights have vastly differing efficiencies and color of light. The most efficient source of electric light is the low-pressure sodium lamp. It produces, for all practical purposes, a monochromatic orange/yellow light, which gives a similarly monochromatic perception of any illuminated scene. For this reason, it