An explanation for why the fundamental tone of pipe instruments is lower than expected.

"When an organ pipe sounds, a vortex [...] forms over the pipe’s rim, the team reported March 14 in Chicago at a meeting of the American Physical Society. What’s more, this vortex is capped by a hemisphere of resonating air."

https://www.sciencenews.org/article/pipe-organs-violate-rule-sound-physics-vortex-vibration-air

#Sound #Music #PipeOrgans