Dielectric Resistance. The resistance a body offers to perforation or destruction by an electric discharge.
Dimmer. An adjustable choke or resistance coil used for regulating the intensity of electric incandescent lamps. It is employed extensively in theatres for raising or lowering the brilliancy of lights.
Dipping. The process of cleaning articles by dipping them in acids or caustic soda, preparatory to electro-plating.
Simple immersion, with or without current, to put a blush of metal on a cleaned surface.
Dipping-needle. A magnetic needle mounted on a horizontal bearing so that it will dip vertically when excited by a current passing horizontally about it. The ordinary compass-needle is mounted on a point, and swings freely to the right or left only.
Direct Current. (See [Current, Direct].)
Discharge. The eruptive discharge from a Leyden-jar or accumulator of a volume of electricity stored within it.
The abstraction of a charge from a conductor by connecting it to the earth or to another conductor.
Discharge, Disruptive. The discharge of a static charge through a dielectric. It involves the mechanical perforation of the dielectric.
Disconnect. To break an electric circuit or open it so as to stop the flow of current; to remove a part of a circuit or a piece of apparatus from a circuit.