Superposition in a snapshot
Superposition in a snapshot

Displacement is the signed distance from equilibrium at one instant, while amplitude is the maximum possible displacement.
Step-by-step lessons covering Edexcel A Level Physics Superposition and stationary waves for A Level Physics. Each lesson works through exam-style questions in Paper 1, Paper 2 and Paper 3 format. Physics is one of the most mathematically demanding A Levels -- at least 40% of the marks across the three papers require maths skills at Level 2 (GCSE) standard or above, so build calculation and graph-handling fluency alongside the conceptual content from the start.