Collier's New Encyclopedia (1921)/Insulator
INSULATOR, in electricity, a nonconductor of electricity so placed as to insulate a body. In thermotics, a nonconductor of heat placed so as to prevent the passage of heat to or from a body.
Edition of 1921; disclaimer. See also Thermal insulation on Wikipedia.
INSULATOR, in electricity, a nonconductor of electricity so placed as to insulate a body. In thermotics, a nonconductor of heat placed so as to prevent the passage of heat to or from a body.