For my senior year, the school sprang for a FORTRAN compiler to run on the business office NCR computer. My job was to run the students punch-card decks through the computer during the business office lunch hour. Spent an interim month learning to use FORTRAN as a language usage analysis tool, under tutelage of a Classic Languages professor.
electric forces can be attractive or repulsive, whereas gravitational forces are only attractive.
Similarities between magnetic fields and electric fields: 1  Electric fields are produced by two kinds of charges, positive and negative. 2  Magnetic fields are associated with two magnetic poles, north and south, although they are also produced by charges (but moving charges).