Detrimental Effects of Capacity

Electrostatic capacity plays an important part in the transmi ion of speech. Its presence between the wires of a line and between them and the earth causes one of the lo es from which long-distance telephony suffers. Its presence in condensers a ists in the solution of many circuit and apparatus problems. A condenser is a device composed of two or more conductors insulated from each other by a medium called the dielectric . A pair of metal plates separated by gla , a pair of wires separated by air, or a pair of sheets of foil separated by paper or mica may constitute a condenser. The use of condensers as pieces of apparatus and the problems presented by electrostatic capacity in lines are discu ed in other chapters.