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.
There are four main electromagnetic interactions: 1  The force of attraction or repulsion between electric charges is inversely proportional to the square of the distance between them. 2  Magnetic poles come in pairs that attract and repel each other, much as electric charges do.