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Vertically rolling ball 'challenges our basic understanding of physics'

https://www.popsci.com/science/vertical-rolling-ball/

10•gennarro•1d ago

Comments

iliti22•1d ago

I am beginning to understand why federal funds were cut to universities. "Spitball by middle school kid rolls down whiteboard rather than instantly falling off! OMG we need a million dollars to study this."

AlotOfReading•1d ago

Looks like they got around $75,000 total, split up over two grants, shared by the co-authors and the lab. That's a shockingly small budget and produced a neat study. Seems like Canada's getting their money's worth.

rsfern•1d ago

The article in Soft Matter is open access: https://doi.org/10.1039/D4SM01490A

They have some interesting analysis of the elastic deformation that happens during the rolling process (as opposed to the ball just falling or sliding). Turns out it’s pretty sensitive to the elastic constant of both the ball and the wall

metalman•1d ago

this is very interesting and may point to a new way to look at fluid dynamics, which is a poorly understood field that effects a great deal of human endevour

gus_massa•15h ago

> Regardless, Mitra and colleagues wrote that their observation “challenges our basic understanding of physics,” with practical effects extending far beyond a neat lab trick.

The description of the orb and how it works, reminds me of the Sticky Octopus toys https://www.youtube.com/watch?v=ruLT3LTmfxc&t=130s definitively not new physics.

Switzerland Drifts Toward a Surveillance State Due to New Controversial Laws

https://news.itsfoss.com/swiss-privacy-bill-controversy/

2•miles•2m ago•0 comments

Guide: Integrating Okta SAML SSO with Next.js (Passport and API Routes)

https://ssojet.com/blog/integrating-okta-saml-sso-with-your-next-js-application/

1•andy89•3m ago•1 comments

Lawsuit: Doge, HHS used "hopelessly error-ridden" data to fire 10k workers

https://arstechnica.com/tech-policy/2025/06/lawsuit-doge-hhs-used-hopelessly-error-ridden-data-to-fire-10000-workers/

1•duxup•3m ago•1 comments

Using AI to Debug Your Programs with Undo

https://undo.io/resources/using-ai-debug-programs-with-undo/

2•mark_undoio•8m ago•0 comments

Curtis Yarvin's Plot Against America

https://www.newyorker.com/magazine/2025/06/09/curtis-yarvin-profile

7•bitsavers•8m ago•0 comments

Recording Links: The Nitty Gritty Details Behind Today's Launch

https://jam.dev/blog/just-launched-recording-links-magic-links-for-bug-reports/

1•anulman•9m ago•0 comments

Agent Village

https://theaidigest.org/village

1•85392_school•11m ago•0 comments

Logs in Sentry: Now in Open Beta

https://blog.sentry.io/logs-in-sentry-open-beta/

1•tosh•12m ago•0 comments

Trump's war on Harvard is destroying an American strength [video]

https://www.cnn.com/2025/06/01/politics/video/gps0601-trump-harvard-war-universities

1•breadwinner•12m ago•0 comments

Linux Emulation in FreeBSD

https://docs.freebsd.org/en/articles/linux-emulation/

1•bangonkeyboard•13m ago•0 comments

Show HN: Cloudflare Workers Compatible MCP Boilerplate with OAuth & PostgreSQL

https://github.com/f/mcp-cloudflare-boilerplate

2•fka•16m ago•0 comments

New release of wallabag with Pocket import

https://wallabag.org/news/20250604-new-release-wallabag-2613/

2•nicosomb•19m ago•1 comments

Ask HN: What was your failed startup and why did it fail?

6•radialstub•20m ago•0 comments

Hardening Fixes for v6.16-Rc1

https://lkml.org/lkml/2025/5/31/319

2•__natty__•22m ago•2 comments

IRS Makes Direct File Software Open Source After Trump Tried to Kill It

https://gizmodo.com/irs-makes-direct-file-software-open-source-after-trump-tried-to-kill-it-2000611151

3•miles•22m ago•1 comments

Pepe Mujica's Long Revolution

https://www.newyorker.com/news/postscript/pepe-mujicas-long-revolution

1•PaulHoule•22m ago•0 comments

Moonlink: Real-Time Postgres to Iceberg Mirroring

https://github.com/Mooncake-Labs/moonlink

2•davidgomes•23m ago•0 comments

Brazilians will soon be able to sell their digital data

https://restofworld.org/2025/brazil-dwallet-user-data-pilot/

1•hbartab•23m ago•0 comments

Obvio's stop sign cameras use AI to root out unsafe drivers

https://techcrunch.com/2025/06/04/obvios-stop-sign-cameras-use-ai-to-root-out-unsafe-drivers/

1•rntn•23m ago•0 comments

Cyber Tech

https://aitechhub.netlify.app/cybersecurity-privacy/

1•blackpc•25m ago•0 comments

JSON Edit

https://sascha-andres.github.io/jsonedit/

1•briefbote•26m ago•0 comments

MCP: AI Agents' Superpower for Real-World Context and Automation

https://www.taskade.com/blog/mcp/

2•johnxie•26m ago•0 comments

Vibecoding an authorized RAG chatbot with minimal coding experience

https://egeayan.com/vibecoding-rag-chatbot/

4•meghan•27m ago•0 comments

The heart of the US oil boom is slowing

https://www.reuters.com/breakingviews/heart-us-oil-boom-is-slowing-2025-05-06/

2•Teever•27m ago•0 comments

Worm-inspired treatments inch toward the clinic – Knowable Magazine

https://knowablemagazine.org/content/article/health-disease/2025/worm-inspired-treatments-inch-toward-clinic

1•rbanffy•28m ago•0 comments

Introducing: B200s and H200s on Modal

https://modal.com/blog/introducing-b200-h200

1•prydt•32m ago•0 comments

The Complete Guide to AI Agent Monetization

https://blog.paid.ai/p/the-complete-guide-to-ai-agent-monetization

2•arnon•33m ago•0 comments

Show HN: Alquilame.io – Lightweight RentalManagement (Catalog+bookings+WhatsApp)

https://alquilame.io

1•oscarolbe•33m ago•0 comments

Jujutsu on Tangled

https://blog.tangled.sh/stacking

1•tosh•34m ago•0 comments

A Message from Internet Archive Founder, Brewster Kahle

https://archive.org/donate

7•chedoku•35m ago•1 comments