An oscillation, disturbance, A repeating to-and-fro motion about an equilibrium position or a 'wiggle' in time and space.
Mass on a Spring Example
Cool resource and well categorised information for one to answer any queries. no need to search to hard for a specific topic, all are headed with bold font and colouring as well as specific scenarios with answer's. I wonder if there is a questions not found right across the entire spectrum of this subject. I rate this a 1 definitely as "helpful", & a 5, "keep".