Electrical breakdown spark plugs in internal combustion engines. Spark-gap transmitters were used in early radio telegraph systems. Electrical breakdown Electrical breakdown or dielectric breakdown is when current flows through an electrical insulator when the voltage applied across it exceeds the breakdown voltage. This results in the insulator becoming electrically conductive. Electrical breakdown may be a momentary event (as in an electrostatic discharge), or may lead to a continuous arc if protective devices fail to interrupt the current in a power circuit. Under sufficient electrical stress, electrical breakdown can occur within solids, liquids, gases or vacuum. However, the specific breakdown mechanisms are different
Jim Measures Hull Kingston Rovers in the 1964 Challenge Cup Final during the 1963–64 season at Wembley Stadium, London on Saturday 9 May 1964, in front of a crowd of 84,488. Jim Measures is the father of rugby league of the 1990s for St. Helens Colts, and A-Team, Leigh and Widnes Vikings; Neil Measures. Jim Measures James Measures (born 14 April 1939), also known by the nickname of "Jim", is an English former professional rugby league footballer who played in the 1950s and 1960s. He played at representative level for Great Britain, and at club level for St Helens, Widnes and the