+A **sine wave** is a smooth, periodic oscillation, a fundamental waveform describing cyclical phenomena. It is mathematically pure, tracing a distinctive 'S' shape that represents continuous [Harmonic Motion](/wiki/harmonic_motion) and is key to understanding [Wave](/wiki/wave) propagation in nature and engineering.
+## See also
+- [Frequency](/wiki/frequency)
+- [Amplitude](/wiki/amplitude)
+- [Oscillation](/wiki/oscillation)
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