Physics - Waves - Behavior - Reflection of waves - Laws of Reflection

A 4-step lesson. Step 1: 'The Normal: An imaginary line perpendicular (90°) to the surface at the point where the wave hits. All angles are measured from the normal, NOT from the surface.' Step 2: 'First Law of Reflection: The angle of incidence equals the angle of reflection. θᵢ = θᵣ. Always!' Step