Superposition of Harmonic Waves
Wave 1 (e.g. Position)
Amplitude
60
Phase Shift (°)
0°
Wave 2 (e.g. Velocity × dt)
Amplitude
40
Phase Shift (°)
90°
y₁ = 60 × cos(kx + 0°)
+
y₂ = 40 × cos(kx + 90°)
=
y_sum = 72.1 × cos(kx + 33.7°)
(The sum of two sinusoids with the same period is ALWAYS a sinusoid with that same period)