the turn density is n=N/L = turns/m. If the current in the solenoid is I = amperes. and the relative permeability of the core is k = , then the magnetic field at the center of the solenoid is. B = Tesla = gauss. The Earth's magnetic field is about half a gauss.The relative permeability of magnetic iron is around 200.n the above expression for the magnetic field B, n is the number of turns per unit length, sometimes called the turns density.
Definition of con artist. : a person who tricks other people in order to get their money The couple lost their savings to a con artist who told them he was an investment broker.
con 1 (kÅn) adv. In opposition or disagreement; against: debated the issue pro and con. n. 1. An argument or opinion against something. 2. One who holds an opposing opinion or view. [Short for contra.] con 2 (kÅn) tr.v. conned, conÂ·ning, cons Archaic 1. To study, peruse, or examine carefully.