The Singing Sink: Decoding the Music of Your Morning Glass
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The Singing Sink: Decoding the Music of Your Morning Glass
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About this listen
Ever wondered why the pitch rises as your cup gets fuller? This podcast dives into the hidden physics of everyday life, revealing how a simple pour is actually a complex symphony of millimetre-scale air bubbles acting as tiny, shape-changing 3D loudspeakers. We explore how every vessel—from a wine bottle to a tea mug—functions as a Helmholtz resonator, where the shrinking air space amplifies higher and higher frequencies until the container is perfectly full. Join us to learn why coupled bubble clouds create the roar of the ocean and why your ears can "see" the water level even in the dark.Filling a glass is much like shortening a guitar string with your finger; as the water rises, the "string" of air above it becomes shorter, forcing it to vibrate faster and sharper until the very last drop.