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/

Most people love lasers, because they can make cats chase, read music from a shiny disc, etch and cut materials, and be very shiny in Hollywood blockbusters, even when their …read more (https://hackaday.com/2024/08/02/getting-a-laser-eye-injury-and-how-to-avoid-it/)

This Week in Security: Echospoofing, Ransomware Records, and Github Attestations
https://hackaday.com/2024/08/02/this-week-in-security-echospoofing-ransomware-records-and-github-attestations/

It’s a bit of bitter irony, when a security product gets used maliciously, to pull off the exact attack it was designed to prevent. Enter Proofpoint, and the EchoSpoofing attack. …read more (https://hackaday.com/2024/08/02/this-week-in-security-echospoofing-ransomware-records-and-github-attestations/)

Solar Fountain Aerates Garden Pond
https://hackaday.com/2024/08/02/solar-fountain-aerates-garden-pond/