# Scientists used children’s ‘silly sprinklers’ to solve a physics problem Richard Feynman could not; the r

> **Newsylist Open Intelligence Dossier** · First detected: 2026-07-21 03:29 UTC · Category: Science · Sources: 4 · Current Velocity: 2

## Executive Summary
Researchers have resolved a decades-old physics puzzle involving 'silly sprinklers' that famously stumped Richard Feynman.

## Intelligence Brief
Scientists have solved the Feynman sprinkler mystery by utilizing children's 'silly sprinklers' and putting them in reverse. The solution identifies momentum flux, rather than fluid swirl, as the mechanism that allows the device to spin in both directions.


Coverage from ScienceDaily, Tech Times, Mines Newsroom, and The Times of India emphasizes the resolution of this long-standing physics problem. A researcher from Mines was specifically noted as helping to unravel the puzzle.


Future focus will likely remain on the role of momentum flux in the device's rotation, as this was the key factor cited in the solution.

## Verified Facts & Key Claims
### What was the core of the physics problem?
The problem involved the behavior of 'silly sprinklers' and was a mystery that Richard Feynman could not solve.

### How was the problem solved?
Researchers put the sprinklers in reverse to understand the physics involved.

### What caused the sprinkler to spin both ways?
According to Tech Times, the rotation is caused by momentum flux rather than fluid swirl.

## Key People, Organizations & Locations
Scientists, Mines, Richard Feynman, Feynman Sprinkler Problem Solved Momentum Flux Not Fluid Swirl Spins Both Ways

## Multi-Source Evidence Table
| Source Outlet | Headline | Published (UTC) | Verification URL |
|---|---|---|---|
| Mines Newsroom | Mines researcher helps put “silly sprinklers” in reverse to unravel decades-old physics puzzle | 2026-07-19 17:27 | [Source Link](https://news.google.com/rss/articles/CBMivgFBVV95cUxNU1o3SkxyckM2NHN6STRkdXNCQkZ6a0NvVVZTcmdPVlpaTWdCWEotMmNCY2ZaUlFBMVVibzd5YzBuVldTeUo3enozVnRqdndhV29aZ1dYVkZTZzJmdEVReTR1SUlaRXhIUktpMExHeGdiYnZ5QlFXQ3lySnVndDd3UFAtanV5LWVIZlJzYXVpUVJaYkVKOVduT19DYXB6R0dnNXd1d2lWcGtMYWFSMFdnRWZkazVRRl9oaEd5X0Nn?oc=5) |
| Tech Times | Feynman Sprinkler Problem Solved: Momentum Flux, Not Fluid Swirl, Spins Both Ways | 2026-07-19 17:27 | [Source Link](https://news.google.com/rss/articles/CBMizgFBVV95cUxORGJUNTI3UVdldnFZMmZ1aHZMaFlXQVh2MXJPeHpRamdONXU4d2tHQTZtTVZDSW9ycjdxRTI3dlI4N2dSZlE5Tk5TTGllcGV6MmlxYTVtbjVKWHhjSy1ybkFWZmlLSEFmX2JITy1KRUM3aEhWY3IxYmJOWDU2Q0xLdldjZXZDVWhYVW9Vd1lNQ1hYd3dSMXZDMk9YNlZlaExjemU5V3BoZms5YTlZWkV2bUhvek5uTG03TldDb2NRV0wwdFR2N0dTb0ppR2xGUQ?oc=5) |
| ScienceDaily | “Silly sprinklers” help scientists finally solve Feynman’s famous sprinkler mystery | 2026-07-19 17:27 | [Source Link](https://news.google.com/rss/articles/CBMib0FVX3lxTE9TSGtuX3l3aF96RVdIQkFXbHZ5TnVlVy1CeWR6enZhTG1qNWpOT0k0LUFqWmdLSUFHMFNCMUdUOGY1SkJ3YklGSjlkMVRzblpTTlZ3T2ZtdmpzQ3RLZHFvZ0xwWk9UZmk5TnZfQlFYcw?oc=5) |
| The Times of India | Scientists used children’s ‘silly sprinklers’ to solve a physics problem Richard Feynman could not; the r | 2026-07-19 17:27 | [Source Link](https://news.google.com/rss/articles/CBMisAJBVV95cUxQR1R3Z3lRY2hBVTh2UE5TaW4xTnp5M1Y4YVY5SWNCU2pVRkVBaUxRcENEMzBzWEZNcHRDTXNaVk1EazZyTWxaWHRMSE9GbmFqOEVVV2FrZEhUR1prRGtEVU9FSnVubkRHbndJM1hJOGEzWlpFSzRUTkwxVHhFb2o1TjU1ck42Q0FrWFRHVEFJWm1rQUcwWTZaRENELXc1VmQwaWRZMmZfTTMycWpSSXY2QUJPYVh1aDJmQ0syVDBZdjMxUGxrNFp6bTBfZXJXUzZDTkRISW0weHVxZ0EzZ0VyN3hkYUQ1Q1FpYlRYYnlfbVk5QnlvVk1pZi1EeGkwNWRtVFc3N0RwTUd3NFNiNHBsZ3dqblBXUy1kM1JROElBRlhCclV1MVhoTkxzTW9fLVBN0gG2AkFVX3lxTE52UDJ3VFdxTmZiQTNXMG11N1g2ZnBsdWVwVHp) |

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*Canonical Source: https://www.newsylist.com/trend/2026-07-21/scientists-used-children-s-silly-sprinklers-to-solve-a-physics-problem-richard*
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