KdV Solitons

Korteweg–de Vries equation: waves that pass through each other unchanged

Soliton 1 speed: 2.0
Soliton 2 speed: 0.8
Time scale: 1.0

KdV solitons (Korteweg & de Vries, 1895) are exact wave solutions that maintain their shape and speed indefinitely. Their remarkable property: during collisions they pass through each other with only a phase shift — no energy loss, no shape change. Height = 2κ², speed = 4κ².