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Публикация

Patrick Dufour

I’ve been postponing writing about seam-shifted wake for ages. Time to finally dive in. Part 2 once the semester is over and grading is behind me. www.laphysiquedubaseball.ca/2026/04/05/m...

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Ответы

Patrick Dufour

Before diving into seam-shifted wake, Part 2 will take a short detour to explain in detail the physics behind the evolution of the seam pattern seen in this clip (originally shared by either @themagnuspi.bsky.social or @pitchingninja.com on Twitter a few years ago, I lost track of the exact source).

Ответ для Patrick Dufour
Patrick Dufour

This is one example, but you see this frequently when looking at sliders in slow motion. Supported by numerical simulations, I’ll answer: What role does SSW play in this phenomenon? Why doesn’t it happen all the time, and what conditions are required? How does it affect SSW? Stay tuned.

Ответ для Patrick Dufour
Barton L Smith

All I remember is that it was a playoff game.

Ответ для Patrick Dufour
Mike Fast

I was looking back trying to find the first time I observed this effect, and, unrelated, I ran across this post from @pobguy.bsky.social from 2012. It looks like Rod Cross discovered seam-shifted wake without us realizing that was what we were seeing? baseball.physics.illinois.edu/Garcia1.html

Dissecting a Mystery Pitchbaseball.physics.illinois.edu