Simplified side-on 2D rendering of the same real pendulum-wave physics as the 3D version: each bob is drawn on a single horizontal line, its left-right pixel offset standing in for the true swing amplitude L·sinθ, with lengths Li fixed so pendulum i completes (30+i) swings per resync cycle at the reference gravity. Motion is integrated with the real nonlinear equation θ'' = −(g/L)sinθ − cθ' (RK4), not a canned sine animation.
T_i = 2π√(L_i/g) L_i chosen so T_i = T_cycle/(30+i)
Click a bob to give it a ghostly push (an angular-velocity impulse); drag empty canvas to pan, scroll to zoom.