A sine wave or sinusoidal wave
Updated
A sine wave or sinusoidal wave is the most natural representation of how many things in nature change state. A sine wave shows how the amplitude of a variable changes with time. The variable could be audible sound for example.
Note
Market manipulators can not hide from this natural phenomena called sine waveNote
if price is under the wave the wave act as a resistance
if price is above the wave
the wave act as a support
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