👉 Oscillations are disturbances or changes that occur in a system over time, often due to external forces. These can be caused by changes in internal variables, such as temperature or pressure, or changes in the environment around them, such as wind or water flow. The term "oscillation" is derived from the Greek word "oscilla," which means to sway or move back and forth. Oscillations are often seen in systems that exhibit a certain amount of resistance or resistance change over time