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How does a whip break the sound barrier? (Slow Motion Shockwave formation) - Smarter Every Day 207

SmarterEveryDay · explainer · Watch on YouTube

Everyday physics & science demosFundamental physics

What it is

Smarter Every Day uses high-speed and Schlieren photography to show how a whip crack is a supersonic shockwave formed at the tip. It references academic papers on whip physics.

Why Hacker News recommends it

Recommended as the clearest footage of a whip tip going supersonic, and cited in shockwave discussions.

  • 2 people recommended it
  • 2 different months
  • 2 strong recommendations
  • first 2019, last 2023

What HN commenters said

  1. “I highly recommend it.”

    Old-school Schlieren setup capturing shockwave formation in whip cracks.

    wolfram74, 2019-03 · Strong recommendation · in “Nasa captures images of supersonic shockwaves”

  2. “(very much recommended)”

    Shows a whip tip reaching supersonic speed.

    nuccy, 2021-12 · Strong recommendation · in “Supersonic Trebuchet”

Excerpts from Hacker News comments, linked to the originals. Summaries and labels were written by a language model from those comments.

Topics: schlieren photography, supersonic, shockwave, slow motion, physics

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