Electricity most materials is relatively constant over a range of temperatures and currents; materials under these conditions are known as 'ohmic'. The ohm, the unit of resistance, was named in honour of Georg Ohm, and is symbolised by the Greek letter Ω. 1 Ω is the resistance that will produce a potential difference of one volt in response to a current of one amp. The capacitor is a development of the Leyden jar and is a device that can store charge, and thereby storing electrical energy in the resulting field. It consists of two conducting plates separated by a thin insulating
The Civil Wars: A Tree Is Best Measured When It Is Down The Civil Wars: A Tree Is Best Measured When It Is Down the CIVIL warS: a tree is best measured when it is down is an opera created in the early 1980s by director Robert Wilson to music by Philip Glass, David Byrne, Gavin Bryars and others. The vast five-act work has never been performed whole. Originally, "The Civil Wars" was conceived as a single daylong piece of music theatre to accompany the 1984 Summer Olympics. Six different composers from six different countries were to compose sections of Wilson's text inspired by the American Civil War. After initial premieres in