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Rentahuman.ai Turns Humans into On-Demand Labor for AI Agents

https://www.forbes.com/sites/ronschmelzer/2026/02/05/when-ai-agents-start-hiring-humans-rentahuma...
1•tempodox•1m ago•0 comments

StovexGlobal – Compliance Gaps to Note

1•ReviewShield•4m ago•0 comments

Show HN: Afelyon – Turns Jira tickets into production-ready PRs (multi-repo)

https://afelyon.com/
1•AbduNebu•5m ago•0 comments

Trump says America should move on from Epstein – it may not be that easy

https://www.bbc.com/news/articles/cy4gj71z0m0o
2•tempodox•5m ago•0 comments

Tiny Clippy – A native Office Assistant built in Rust and egui

https://github.com/salva-imm/tiny-clippy
1•salvadorda656•10m ago•0 comments

LegalArgumentException: From Courtrooms to Clojure – Sen [video]

https://www.youtube.com/watch?v=cmMQbsOTX-o
1•adityaathalye•12m 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/
2•petethomas•16m ago•1 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•20m ago•0 comments

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

https://github.com/chenyanchen/mermaid-formatter
1•astm•36m ago•0 comments

RFCs vs. READMEs: The Evolution of Protocols

https://h3manth.com/scribe/rfcs-vs-readmes/
2•init0•43m ago•1 comments

Kanchipuram Saris and Thinking Machines

https://altermag.com/articles/kanchipuram-saris-and-thinking-machines
1•trojanalert•43m 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•45m 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•48m ago•1 comments

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

1•au-ai-aisl•58m 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•58m 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•1h ago•0 comments

From Human Ergonomics to Agent Ergonomics

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

Advanced Inertial Reference Sphere

https://en.wikipedia.org/wiki/Advanced_Inertial_Reference_Sphere
1•cyanf•1h 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
Open in hackernews

LED types by color, brightness, and chemistry (2021)

https://donklipstein.com/ledc.html
29•Lammy•3mo ago

Comments

bergsteiger•2mo ago
Very cool to see this on the front page - Don's "The Most Efficient LEDs!" site at https://donklipstein.com/led.html is a great resource, since it is very hard to come by reliable information on early commercial devices!

We used some of this data to trace progress in LED development for our recent Nature Energy paper on technology spillovers in solid-state lighting: https://doi.org/g9kcjd.

exmadscientist•2mo ago
What I want to see is someone go through and assign sRGB colors for each of the main LED types. It's surprisingly difficult. I've failed every time I've tried, in that what I come up with doing it by starting from the spectra (or a simple gaussian approximation) looks on screen nothing like the real LEDs. The greens (515-525nm) are particularly difficult.

I recognize that sRGB will never be able to do a perfect job, but it seems like it has to be possible to do decently well.

(What do I need this for? I design electronics. I use LEDs as indicators. I like to show the true color of the LED in my schematics and documentation, as best I can. And I try to never use the same color twice, in small and bespoke things, so there's less risk of indicator confusion, which means I've often got a lot of funny colors around.)

zamadatix•2mo ago
sRGB has such a limited range in greens (well, it's all pretty limited - just greens particularly) I really don't think there can be a decent result.
klysm•2mo ago
sRGB is probably the wrong way to think about this. XYZ color space would be a better conceptual place to start
exmadscientist•2mo ago
Perhaps, but I need to end up at sRGB somehow for display.
klysm•2mo ago
Yes but why add the confusion of gamma correction etc and a small gamut?
exmadscientist•2mo ago
I mean, I'm not immediately jumping to sRGB or anything. (Well, I think I tried that at one point, not like it worked....) I just need to end there. I've tried plenty of things over the years and I simply cannot make an algorithm that takes some kind of spectral input and outputs a hex color code that I can make a blob of on my (color-calibrated!) monitor which looks anything like the LED I have in hand.

Coming up with a matching color by hand can give a decent result, so this is not solely sRGB being crap.

ansgri•2mo ago
In abstract case, you'd probably want to use xy color coordinates from xyY color space to specify LED color. Or even wavelength + spread, as you've tried. Those were the models that were used in one microLED-related research project I was part of.

Using those in images however would be another can of worms, you'll need some kind of physics-based rendering with good HDR tone mapping, as the human perception of light-emitting object against reflective background is highly non-linear.

For your use case it would probably be better to develop a standardized testing setup and just take RGB or XYZ coordinates from an image taken with a calibrated camera. Something like this:

* "standard gray" material surface

* a hole for LED with some kind of light pipe of standard shape

* uniform diffuse lighting of intensity computed to be proportional to your LED power measured in a standard way.

In this way it should be possible to create a catalog of LEDs useful for designing products.

exmadscientist•2mo ago
Part of the motivation for doing this was to be able to visualize things without having actual parts in hand, to save on prototyping effort. I agree that just measuring the thing is probably the solution, though I'm perennially disappointed that following the Official Rules for just calculating the result is so terrible.
kelsolaar•2mo ago
sRGB is not wide gamut enough to represent most of the LEDs, you would need a Wide Gamut display and use a space like ITU-R BT.2020.
exmadscientist•2mo ago
That's not the point. The point is that I have to put representations of LEDs in places that are sRGB only (documentation!), so I want the best I can do in sRGB.
lazyweb•2mo ago
Veritasium - Why It Was Almost Impossible to Make the Blue LED

https://www.youtube.com/watch?v=AF8d72mA41M

rpaddock•2mo ago
I remember seeing in a Popular Electronics Magazine, in the late 60s or early 70s, stating "There will never be a Blue LED". Despite looking I've not found that issue again.