An oscillation is a periodic motion that repeats itself in a regular cycle. An oscillating movement is always around an equilibrium point or mean value. It is also known as a periodic motion.
- Oscillation is a feature of a wave such as an electromagnetic wave.
- The side-to-side swing of a pendulum and the up-and-down motion of a spring with a weight attached are examples of forms of oscillation.
- The oscillations of electromagnetic waves results from the transmission of energy by their electric and magnetic fields.