🌊 Harmonic Tide Predictor: Constituents, Spring-Neap Beat and Gauge (2D)

Add five tidal constituents (M2, S2, N2, K1, O1) with their amplitudes and phases and watch a tide gauge follow the sum. See the 12.42 h lunar tide, the 14.77 day spring-neap beat of M2 and S2, the form factor that classes the tide, and a harmonic analysis that recovers the amplitude from the record. Four in-page numerical checks.

2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install