oscillation
Quick Summary
Oscillation, in physics, refers to repetitive movement back and forth through an equilibrium position. This motion is characterized by a restoring force that is always directed toward the equilibrium and is proportional to the displacement from it, a principle known as Hooke's law (F = -kx).1
A prime example is simple harmonic motion, where the displacement changes sinusoidally with time. The time for one complete cycle is constant and independent of the amplitude. This type of motion is fundamental to many physical systems, including vibrating springs, pendulums, and sound waves, and is crucial for accurate timekeeping.12
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