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LegalArgumentException: From Courtrooms to Clojure – Sen [video]

https://www.youtube.com/watch?v=cmMQbsOTX-o
1•adityaathalye•2m ago•0 comments

US moves to deport 5-year-old detained in Minnesota

https://www.reuters.com/legal/government/us-moves-deport-5-year-old-detained-minnesota-2026-02-06/
1•petethomas•5m ago•0 comments

If you lose your passport in Austria, head for McDonald's Golden Arches

https://www.cbsnews.com/news/us-embassy-mcdonalds-restaurants-austria-hotline-americans-consular-...
1•thunderbong•9m ago•0 comments

Show HN: Mermaid Formatter – CLI and library to auto-format Mermaid diagrams

https://github.com/chenyanchen/mermaid-formatter
1•astm•25m ago•0 comments

RFCs vs. READMEs: The Evolution of Protocols

https://h3manth.com/scribe/rfcs-vs-readmes/
2•init0•32m ago•1 comments

Kanchipuram Saris and Thinking Machines

https://altermag.com/articles/kanchipuram-saris-and-thinking-machines
1•trojanalert•32m ago•0 comments

Chinese chemical supplier causes global baby formula recall

https://www.reuters.com/business/healthcare-pharmaceuticals/nestle-widens-french-infant-formula-r...
1•fkdk•35m ago•0 comments

I've used AI to write 100% of my code for a year as an engineer

https://old.reddit.com/r/ClaudeCode/comments/1qxvobt/ive_used_ai_to_write_100_of_my_code_for_1_ye...
1•ukuina•37m ago•1 comments

Looking for 4 Autistic Co-Founders for AI Startup (Equity-Based)

1•au-ai-aisl•47m ago•1 comments

AI-native capabilities, a new API Catalog, and updated plans and pricing

https://blog.postman.com/new-capabilities-march-2026/
1•thunderbong•48m ago•0 comments

What changed in tech from 2010 to 2020?

https://www.tedsanders.com/what-changed-in-tech-from-2010-to-2020/
2•endorphine•53m ago•0 comments

From Human Ergonomics to Agent Ergonomics

https://wesmckinney.com/blog/agent-ergonomics/
1•Anon84•56m ago•0 comments

Advanced Inertial Reference Sphere

https://en.wikipedia.org/wiki/Advanced_Inertial_Reference_Sphere
1•cyanf•58m ago•0 comments

Toyota Developing a Console-Grade, Open-Source Game Engine with Flutter and Dart

https://www.phoronix.com/news/Fluorite-Toyota-Game-Engine
1•computer23•1h ago•0 comments

Typing for Love or Money: The Hidden Labor Behind Modern Literary Masterpieces

https://publicdomainreview.org/essay/typing-for-love-or-money/
1•prismatic•1h ago•0 comments

Show HN: A longitudinal health record built from fragmented medical data

https://myaether.live
1•takmak007•1h ago•0 comments

CoreWeave's $30B Bet on GPU Market Infrastructure

https://davefriedman.substack.com/p/coreweaves-30-billion-bet-on-gpu
1•gmays•1h ago•0 comments

Creating and Hosting a Static Website on Cloudflare for Free

https://benjaminsmallwood.com/blog/creating-and-hosting-a-static-website-on-cloudflare-for-free/
1•bensmallwood•1h ago•1 comments

"The Stanford scam proves America is becoming a nation of grifters"

https://www.thetimes.com/us/news-today/article/students-stanford-grifters-ivy-league-w2g5z768z
4•cwwc•1h ago•0 comments

Elon Musk on Space GPUs, AI, Optimus, and His Manufacturing Method

https://cheekypint.substack.com/p/elon-musk-on-space-gpus-ai-optimus
2•simonebrunozzi•1h ago•0 comments

X (Twitter) is back with a new X API Pay-Per-Use model

https://developer.x.com/
3•eeko_systems•1h ago•0 comments

Zlob.h 100% POSIX and glibc compatible globbing lib that is faste and better

https://github.com/dmtrKovalenko/zlob
3•neogoose•1h ago•1 comments

Show HN: Deterministic signal triangulation using a fixed .72% variance constant

https://github.com/mabrucker85-prog/Project_Lance_Core
2•mav5431•1h ago•1 comments

Scientists Discover Levitating Time Crystals You Can Hold, Defy Newton’s 3rd Law

https://phys.org/news/2026-02-scientists-levitating-crystals.html
3•sizzle•1h ago•0 comments

When Michelangelo Met Titian

https://www.wsj.com/arts-culture/books/michelangelo-titian-review-the-renaissances-odd-couple-e34...
1•keiferski•1h ago•0 comments

Solving NYT Pips with DLX

https://github.com/DonoG/NYTPips4Processing
1•impossiblecode•1h ago•1 comments

Baldur's Gate to be turned into TV series – without the game's developers

https://www.bbc.com/news/articles/c24g457y534o
3•vunderba•1h ago•0 comments

Interview with 'Just use a VPS' bro (OpenClaw version) [video]

https://www.youtube.com/watch?v=40SnEd1RWUU
2•dangtony98•1h ago•0 comments

EchoJEPA: Latent Predictive Foundation Model for Echocardiography

https://github.com/bowang-lab/EchoJEPA
1•euvin•1h ago•0 comments

Disablling Go Telemetry

https://go.dev/doc/telemetry
2•1vuio0pswjnm7•2h ago•0 comments
Open in hackernews

Measuring My DIY Air Purifier

https://chillphysicsenjoyer.substack.com/p/measuring-my-diy-air-purifier
75•crescit_eundo•4mo ago

Comments

polishdude20•4mo ago
I'd be interested to know the decay rate when neither the window is opened or the air purifier is on.
cptskippy•4mo ago
Not the Op but I have PM 2.5 sensors in my house. There is one next to the stove, another in the main bedroom above the kitchen, another in the office above the main bedroom, and another in the garage.

Here's two samples. One was last night when I cooked pancakes, grits, sausages, and hash browns on a gas stove. The fan came on at 6:35:37.

The other is cooking one fried egg in the morning for breakfast.

https://imgur.com/a/zwBU6wA

Rebelgecko•4mo ago
Power consumption (maybe CADR per watt?) is also interesting to measure. From what I've seen, that is the main dimension where homemade purifiers can lag behind dedicated ones. Well, that and aesthetics which is more subjective :)
jerlam•4mo ago
The CR-boxes are rather bad in that regard, but the newer generation of PC-fan builds are significantly better than mainstream HEPA purifiers:

https://housefresh.com/cleanairkits-luggable-xl-review/#the-...

BizarroLand•4mo ago
For comparison sake, a 20 inch box fan, which many CR filters are made from, consume 60-85 watts depending on their speed, which is 50-100% more electricity.

This could be improved by finding more efficient fans, but if you're going for the cheap $25 fans at your local big-box store, you'll pay more for it over time in electricity costs.

I have one as well, but I live in a geodesic dome home and use it in the largest open portion of my house.

The ceiling at its highest point from the lowest point is 18 feet up, and the open section is about 1/2 of my entire home, so the one 20" fan keeps air circulating and being filtered for an enormous portion of my home.

If you live in a more typical home, the 20 inch box fan CR filter might be overkill.

londons_explore•4mo ago
The $2 PC case fan wins on both price, power consumption and quietness, and seems able to filter a roomful of air in an hour or so.
BizarroLand•4mo ago
You will spend a bit more buying a few of them, a 12v power adapter, and the shell to tie everything together, but you are correct.
londons_explore•4mo ago
If you buy the cylindrical air filters, you can pop one on a table, pop a case fan on top, and hook it up to a phone charger via a 20 cent Usbc adaptor.

As a bonus, the USB-C PD adaptor has selectable voltage (5, 9, 12v) on little dip switches, and that can be used as a speed control for a 12v fan.

Turn it up to max when cooking, and down to silent again when sleeping.

No need for any fixings or case or anything.

homebrewer•4mo ago
You must have very clean air already if such a puny fan would be able to keep particulate levels within acceptable limits. In winter, my Xiaomi purifier with a quite powerful turbine fan (or whatever those things are called — they're optimized for pushing air through dense filters) is barely able to keep PM2.5 within 5-10 micrograms on max speed (with doors and windows closed). A PC fan would make approximately zero difference, on or off.
odie5533•4mo ago
I have a Luggable and love it! So quiet and yet loads of airflow!
zbrozek•4mo ago
I built around this thing, which I run at 10% throttle and which consumes 6 watts at that level:

https://terra-bloom.com/products/terrabloom-10-inline-duct-f...