Norfolk Light Pollution Conference, UEA June, 2015
Amber LED LED luminaire Lighting is a major issue in our urban centres these days. There is so much pressure to provide more and brighter lighting but at a huge environmental cost. There are many measures that can be undertaken with new technology to limit the toll on species and habitats (see previous posts: Kingston University Lighting). Light that causes the most pollution is that travelling horizontally (10 degrees) as it goes unchecked for miles through atmospheric dust particles, pollen and salt from the sea. Modern LED lighting is very easy to control and a site can be lit without spilling onto areas that should be kept dark for wildlife. This is called the 'surround ratio' so that there should be no 'surround ratio' or ' light tresspass' onto abutting areas. There are good examples of this along the Crane Corridor and Warren Footpath in Twickenham. Here LED's can be switched on or off to create a narrower cone of light, mounted on ...