Group 11 element Parkes process. These metals, especially silver, have unusual properties that make them essential for industrial applications outside of their monetary or decorative value. They are all excellent conductors of electricity. The most conductive of all metals are silver, copper and gold in that order. Silver is also the most thermally conductive element, and the most light reflecting element. Silver also has the unusual property that the tarnish that forms on silver is still highly electrically conductive. Copper is used extensively in electrical wiring and circuitry. Gold contacts are sometimes found in precision equipment for their ability to remain corrosion-free. Silver
James Robertson (conductor) James Robertson (conductor) James Robertson CBE (17 June 1912 – 18 May 1991) was an English conductor, best known as musical director of Sadler's Wells Opera. Robertson was born in Liverpool and was educated at Winchester College and Trinity College, Cambridge, before studying music at the Leipzig Conservatory and the Royal College of Music in London. He joined the music staff of Glyndebourne Festival Opera in 1937 and became chorus master and repetiteur of the Carl Rosa Opera in 1938. After the Second World War, in which he served in the Royal Air Force, he was appointed musical director of