Term 3 Week 1 2018

Homework

• Ex 3D, p.66--67, Wave Properties
• Ex 3E, p.69-70, Diffration
• Ex 3F, p.73-75 Superposition
• Ex 3G, p.76-78 Two Point Source Interference
• Ex 3H, p.81-83 Waves on a String
• Ex 3I, p.85-87 Wave Refraction on a String
• Ex 3B, p. 47-52, Refraction

Refraction

v1/v2 = 𝛌1/𝛌2 = sin(𝜭1)/sin(𝜭2) = n2/n1

Wave Refraction

n1sin(𝜭1) = n2sin(𝜭2)

Snell's Law (for Light Only)

PhET Refraction application

Apparent position of an object underwater

Refraction of Waves

Snell's Law

v1/v2 = 𝛌1/𝛌2 = sin(𝜭1)/sin(𝜭2) = n2/n1 ← Wave Refraction

n1sin(𝜭1) = n2sin(𝜭2) ← Snell’s Law (light only)