Here in the United States, we’re lagging behind the rest of the world when it comes to shiny new passenger rail, despite being leaders in previous centuries. The Federal Railroad …read more (https://hackaday.com/2024/07/31/a-new-era-for-us-passenger-rail/)

Spin Your Own Passive Cooling Fibres
https://hackaday.com/2024/07/31/spin-your-own-passive-cooling-fibres/

When the temperature climbs, it’s an eternal problem: how to stay cool. An exciting field of materials science lies in radiative cooling materials, things which reflect so much incoming heat …read more (https://hackaday.com/2024/07/31/spin-your-own-passive-cooling-fibres/)

Secret Messages On Plastic, Just Add Tesla Coil
https://hackaday.com/2024/08/01/secret-messages-on-plastic-just-add-tesla-coil/

Here’s a short research paper from 2013 that explains how to create “hydroglyphics”, or writing with selecting surface wetting. In it, an apparently normal-looking petri dish is treated so as …read more (https://hackaday.com/2024/08/01/secret-messages-on-plastic-just-add-tesla-coil/)

Programming Tiny Blinkenlight Projects with Light
https://hackaday.com/2024/08/01/programming-tiny-blinkenlight-projects-with-light/

[mitxela] has a tiny problem, literally: some of his projects are so small as to defy easy programming. While most of us would probably solve the problem of having no …read more (https://hackaday.com/2024/08/01/programming-tiny-blinkenlight-projects-with-light/)

Programming Ada: Implementing the Lock-Free Ring Buffer
https://hackaday.com/2024/08/01/programming-ada-implementing-the-lock-free-ring-buffer/

In the previous article we looked at designing a lock-free ring buffer (LFRB) in Ada, contrasting and comparing it with the C++-based version which it is based on, and highlighting …read more (https://hackaday.com/2024/08/01/programming-ada-implementing-the-lock-free-ring-buffer/)

Altermagnetism in Manganese Telluride and Others: the Future of Spintronics?
https://hackaday.com/2024/08/01/altermagnetism-in-manganese-telluride-and-others-the-future-of-spintronics/

Illustrative models of collinear ferromagnetism, antiferromagnetism, and altermagnetism in crystal-structure real space and nonrelativistic electronic-structure momentum space. (Credit: Libor Šmejkal et al., Phys. Rev. X, 2022)
" data-medium-file="https://hackaday.com/wp-content/uploads/2024/07/ferromagnetism_antiferromagnetism_altermagnetism.png?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2024/07/ferromagnetism_antiferromagnetism_altermagnetism.png?w=800" tabindex="0" role="button">Magnetic materials are typically divided into ferromagnetic and antiferromagnetic types, depending on their magnetic moments (electron spins), resulting in either macroscopic (net) magnetism or not. Altermagnetism is however a recently …read more (https://hackaday.com/2024/08/01/altermagnetism-in-manganese-telluride-and-others-the-future-of-spintronics/)

Rube Goldberg Floppy Disk Cleaner
https://hackaday.com/2024/08/02/rube-goldberg-floppy-disk-cleaner/

Floppies were once the standard method of information exchange, but decades of storage can render them unreadable, especially if mold sets in. [Rob Smith] wanted to clean some floppies in …read more (https://hackaday.com/2024/08/02/rube-goldberg-floppy-disk-cleaner/)

Getting a Laser Eye Injury and How to Avoid it
https://hackaday.com/2024/08/02/getting-a-laser-eye-injury-and-how-to-avoid-it/