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
Conductor (rail) with ticket machine reliability. Nottingham Express Transit started with conductors. Manchester Metrolink and Croydon Tramlink both rely on ticket machines at stops. Systems of ticket checking and selling by a conductor: Modern mass transit systems which operate with conductors on trams include:- Conductor (rail) A conductor (American and Canadian English) or guard (Commonwealth English) is a train crew member responsible for operational and safety duties that do not involve actual operation of the train. The "conductor" title is most common in North American railway operations, but the role is common worldwide under various job titles. In Commonwealth English, a conductor