1. Textbook: 14.3 Homework: Worksheet
Properties of Waves
Textbook: 14.3
Homework: Worksheet

2. Transmission
Transmission: When a wave passes from one medium to another medium
Refraction:  changes and the wave seems to “bend” at the boundary
Diffraction: When a wave passes through an opening <  the wave spreads out
Pg. 487 #1
Pg. 512 #13

3. Reflection A wave can also be reflected back at a boundary
When v1 < v2 (free end) the wave is reflected back with no phase change
When v1 > v2 (fixed end) the wave is reflected back with a phase change
At any boundary there can be a mix of reflection and transmission

4. Wave travelling from fast to slow medium
Wave travelling from slow to fast medium

5. Interference
Interference is the result of two or more waves meeting at a point in space and time
The principal of superposition states that the resultant wave is the vector sum of the waves that are coming together
Constructive Interference: New amplitude is larger
Destructive Interference: New amplitude if smaller
Pg. 511 #10

6. Destructive interference
Constructive interference

7. Constructive interference
Destructive interference