IB Physics SL revision - Waves 1- Simple Harmonic Motion[3课时]
IB Physics SL revision - Waves 2 - properties of waves[1课时]
IB Physics SL revision - Waves 3 - reflection and refraction of waves[1课时]
IB Physics SL revision - Waves 4 - diffraction[1课时]
IB Physics SL revision - Waves 5 - interference[1课时]