Next gen 3D metal printing
Electrochemical Additive Manufacturing (ECAM) is a room-temperature 3D metal printing technology that produces complex, dense metal parts without thermal processing. ECAM builds rapidly at the atomic level from a water-based feedstock containing dissolved metal ions. The electrochemical approach allows for micron-scale feature resolution, complex internal features, high-purity materials, and rapid scalability to support mass manufacturing. […]
Spudguns: Potato Cannon Guide
Well it’s been a long time in coming however I’ve finally ported a great design for spudguns.org that I’ve had sitting on the back burner for a number of years. Took a bit of doing to code the design by hand in Notepad with all the nested tables originally, however with Dreamweaver it’s only taken […]
gRPC: The Bad Parts
gRPC, the high-performance RPC framework, has been super successful (if you work for Google) and has drastically changed the way we all deploy APIs (if you work for Google). gRPC and protobuf is an extremely performant contract-focused framework with extremely wide language support. But it’s not without its downsides. Making a RPC framework that requires […]
Moving objects precisely with sound
In 2018, Arthur Ashkin won the Nobel Prize in Physics for inventing optical tweezers: laser beams that can be used to manipulate microscopic particles. While useful for many biological applications, optical tweezers require extremely controlled, static conditions to work properly. “Optical tweezers work by creating a light ‘hotspot’ to trap particles, like a ball falling […]
Why blue animals are so rare
The color blue is a very common favorite color for humans, but it is not seen in plants and animals very often. According to scientists from the University of Adelaide in Australia, this is partially because a true blue color or pigment doesn’t really exist in nature. Organisms that appear blue must absorb very small […]
Navigating Starlink’s FCC Paper Trail
A Starlink ‘Dishy’. Adapted from Evgeny Opanasenko’s original at Unsplash. Anyone watching the satellite Internet scene in the last few years could not have missed Starlink, the new Low Earth Orbit (LEO) kid on the block. From a researcher’s perspective, SpaceX — Starlink’s operators — are quite opaque, however. There is little engagement with the […]
Show HN: Dorkly: Open Source Feature Flags
Free Open Source Feature Flag system. Dorkly is a git-based open source feature flag backend for LaunchDarkly‘s open source SDKs. It allows you to implement feature flagging consistently across dozens of languages using LaunchDarkly’s battle-tested SDKs. Dorkly strives to be a simple feature flagging system without the cognitive load of yet another tool. If you’re […]
Why We’re Deeply Invested in Making AI Better at Math Tutoring
Too many students struggle with math. In fourth grade, only 36% of students are proficient in math. By eighth grade, that number drops to 26%. Kids are stumped by fractions. Unsure of integers. Confused by calculus. Math derails their dreams. That’s why we unveiled Khanmigo, our pilot AI tutor and teaching assistant, last year. When […]
Ask HN: Why did GeoCities have that crazy design aesthetic?
I was just browsing some geocities “homesteads” and trying to decide what aesthetic you have in mind specifically. https://web.archive.org/web/19970413002044/http://www8.geoci… This person has just learned to use tables. The aesthetic is pretty mild, just a lot of glowy horizontal rules dividing text. Photoshop is mentioned. (It had no DRM, so a lot of us had Photoshop, […]
Texture Enhancement for Video Super-Resolution
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