diamagnetism: phenomenon exhibited by materials like copper or bismuth that become magnetized in a magnetic field with a polarity opposite to the magnetic force; unlike iron they are slightly repelled by a magnet
magnetism: attraction for iron; associated with electric currents as well as magnets; characterized by fields of force
case study: a careful study of some social unit (as a corporation or division within a corporation) that attempts to determine what factors led to its success or failure