12.9 Interference—The Addition and Subtraction of Waves

Wave Interference

When waves travel through each other, their amplitudes  can reinforce or cancel. Duration: 2:43.



Wave Interference

Interference for waves in general, with emphasis on sound, beats, and anti-noise technology. Duration: 8:12



Periodic variations in the loudness of two mismatched frequencies are called beats. Duration: 2:58.