# Researchers Claim to Have Solved the Perplexing ‘Reverse Sprinkler’ Problem That Stumped Feynman

- Published: 2026-07-14T12:57:05Z
- Updated: 2026-07-14T21:59:48Z
- Section: Science & Environment
- Language: English (en)
- Source: The New York Times — https://www.nytimes.com/2026/07/14/science/reverse-sprinkler-physics-problem.html
- Tags: The New York Times · Science
- Canonical: https://www.khabarestan.com/en/news/%D8%B1%D8%A7%D8%B2-%D8%A7%D8%B3%D9%BE%D8%B1%DB%8C-%D9%85%D8%B9%DA%A9%D9%88%D8%B3-%D8%A2%D8%A8%DB%8C-%DA%A9%D8%B4%D9%81-%D8%B4%D8%AF-%DA%86%DA%AF%D9%88%D9%86%DA%AF%DB%8C-%D8%AC%D8%B0%D8%A8-%D8%A2%D8%A8-%D8%B2%DB%8C%D8%B1-%D8%A2%D8%A8

Physicists have debated which way a submerged sprinkler sucking in water would spin. Careful experiments provide an answer.

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