The Physics and 39-Degree Geometry of Duck Wakes

Take a walk by a pond and watch physics unfold: Kelvin’s wake pattern forms a universal 39-degree V behind a moving body in deep water. We explore why the angle is independent of size or speed, how interference selects the visible wake, and the two-to-one ratio between phase and group velocity that confines the wedge. Inside the V you’ll spot transverse waves and divergent wavelets, and we’ll discuss how a duck perceives the waves as stationary shockwaves—turning a simple pond into a precise, eye-catching demonstration of physics.

Note:  This podcast was AI-generated, and sometimes AI can make mistakes.  Please double-check any critical information.

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