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Show HN: 3D Ising Model Simulation – interactive web-based Monte Carlo simulator

https://ising-model.vercel.app
1•nwatab•4h ago
Hello HN! I’ve just released an interactive 3D Ising model simulator built with Next.js. It’s a teaching/demo tool for exploring phase transitions and critical phenomena in ferromagnets.

## Key Features

- Real-time 3D visualization: See a central 2D slice through a 32×32×32 periodic lattice

- Adjustable parameters: Sweep the dimensionless coupling strength (βJ = J/kBT) through the critical point (≈0.22) and tune the external field (βh = h/kBT)

- Monte Carlo updates: Uses the Metropolis algorithm, updating the display every 200 × N³ flip attempts (≈33 million total)

- Live observables: Watch energy and magnetization evolve as you change parameters

## Why this matters The Ising model is a cornerstone of statistical physics and computational science courses. This tool makes it easy to:

- Visualize how temperature and field affect domain formation

- Observe the sharp change in magnetization near Tc

- Experiment with finite-size effects

Try it out and let me know what you think! I’d love feedback on performance, usability, or ideas for new features (e.g., different lattice sizes or algorithms).

Demo & source: https://github.com/nwatab/ising-model

Enjoy!

Pyrefly: A new type checker and IDE experience for Python

https://engineering.fb.com/2025/05/15/developer-tools/introducing-pyrefly-a-new-type-checker-and-ide-experience-for-python/
1•homarp•3m ago•0 comments

Terraform and Ansible is not enough

https://github.com/avkcode/ansamble/blob/main/README.md
1•akrylov•4m ago•1 comments

Audible enclaves crafted by nonlinear self-bending ultrasonic beams

https://www.pnas.org/doi/10.1073/pnas.2408975122
1•bookofjoe•6m ago•1 comments

Emotional Intelligence and Soft skills training in online/Nepal?

1•shivajikobardan•8m ago•0 comments

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https://jordanwtaylor2.substack.com/p/ugly-infrastructure-why-cant-we-have
1•bilsbie•9m ago•0 comments

ShadowBox: Open-Source Privacy-First Cloud Storage with AES-256 Encryption

https://github.com/dillionhuston/Shadow
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https://newatlas.com/energy/stensea-concrete-spheres-ocean-floor-energy-storage/
2•pixiemaster•17m ago•0 comments

Ask HN: Is there a "YouTube" for AI coded web apps?

2•amichail•17m ago•1 comments

Moody's downgrades United States credit rating

https://www.cnbc.com/2025/05/16/moodys-downgrades-united-states-credit-rating-on-increase-in-government-debt.html
3•belter•17m ago•0 comments

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https://jaydaigle.net/blog/what-is-the-axiom-of-choice/
2•Tomte•20m ago•0 comments

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https://upload.wikimedia.org/wikipedia/commons/3/3f/An_Ambitious_Wikidata_Tutorial.pdf
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Animations Using Math Editor

https://luiscristovao.github.io/CSS-Animation-Engine/crazy_animations/game.html
1•ltc_123•23m ago•0 comments

China's plasma drive can nearly double high-altitude drone efficiency

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1•etiam•28m ago•0 comments

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1•jacobp100•34m ago•0 comments

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2•articsputnik•35m ago•0 comments

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https://tomdekan.com/articles/ai-commit-messages
1•tomdekan•42m ago•0 comments

No-boom supersonic flights could slide through US skies soon

https://www.theregister.com/2025/05/17/faa_supersonic_law/
12•rntn•43m ago•3 comments

Dev Therapy, part 4: Tending the narrative gardens

https://melatonin.dev/blog/dev-therapy-part-4-tending-the-narrative-gardens/
4•sudara•49m ago•0 comments

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https://www.youtube.com/watch?v=BD-AJwqzWsU
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https://yamlscript.org/
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https://www.youtube.com/watch?v=esYw7Y1CM28
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https://www.youtube.com/watch?v=m7PVZixO35c
2•areoform•1h ago•1 comments

Show HN: Infofused – Turn Your Discord Server into a Knowledge Hub

https://infofused.com
1•julianvie•1h ago•0 comments