1 In this sense it is nearly synonymous with synopsis. ( 2 n.) The tracing of things to their source, and the resolving of knowledge into its original principles. ( 3 n.) A syllabus, or table of the principal heads of a discourse, disposed in their natural order.
A lightning rod or lightning conductor is a iron rod that is used to make lightning strike it, rather than strike something else. It is part of a lightning protection system. Such a system is made of many such rods. These rods are usually placed at high points of buildings and structures.
The primary purpose of a lightning rod is to. A. attract lightning and guide it to the ground. B. discharge the structure to which it is attached. C. cancel the electric field within the structure to which it is attached. D. induce within the structure to which it is attached a charge opposite to that of charged clouds overhead.