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.
Protons have a +ve charge and electrons have a-ve charge. This interaction between electric charges is called electricity. One important difference between electric charges and magnetic poles is that magnetic poles cannot exist alone, however, electric charges can.