Standing Waves on Strings: The Science of Plucked and Bowed Notes (ja)

How standing wave patterns form on strings and why these patterns determine the pitches and timbres of stringed instruments.

The Physics of Percussion: Membranes, Bars, and Impact (ja)

How percussion instruments produce sound through vibrating membranes and bars, and why their complex wave patterns create distinctive timbres.

Harmonics and Overtones: The Secret Architecture of Sound (ja)

Why musical sounds contain multiple frequencies simultaneously and how the harmonic series defines the unique character of every instrument.

Frequency and Pitch: The Physics Behind What We Hear (ja)

How vibrating objects create sound waves at specific frequencies and how our ears interpret these frequencies as musical pitch.