n. A white or colorless crystalline compound, SiO 2, occurring abundantly as quartz, sand, flint, agate, and many other minerals and used to manufacture a wide variety of materials, especially glass and concrete.ilicon dioxide, SiO 2, a compound that occurs widely in rocks and mineral forms, such as quartz, sand, and flint, and is used to make glass, concrete, and other materials.
Greater London is a ceremonial county of England. It was created on 1 April 1965, covering the 32 London boroughs, and excludes the City of London.The region covers 1,572 km 2 (607 sq mi) and had a population of 8,174,000 at the 2011 census. It has the highest GVA per capita in the United Kingdom at Â£37,232.he term London is normally used in reference to Greater London or to the conurbation, but not often to the ancient, tiny City of London. This small area is often referred to as the City or the Square Mile and it forms the main financial district.
Find London now! London is the capital of England and the United Kingdom, the largest metropolitan area in the United Kingdom and the largest urban zone in the European Union.London's ancient core, the City of London, largely retains its square-mile mediaeval boundaries.ust click on the map right at the position where you think London is located. The map can be zoomed and shifted-as you are used to do with Google Maps-to ensure you can find London. You can drag and drop the red marker or just click anywhere else to change the location of London.