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# 2: Sound

• 2.1: Fundamentals of Sound
Here we examine what makes sound special among waves, and how we can employ the tools of general weave mechanics to this particular wave phenomenon.
• 2.2: Doppler Effect
The effect of relative motion on the pitch of a sound is well known.  Here we will dig into the details to understand this phenomenon.
• 2.3: Interference Effects
We examine interference effects related to sound, such as standing waves in organ pipes and beats.