Given how important our Sun is, our ancestors can be forgiven for seeing it as a god. And even now that we know what it actually is and how it …read more (https://hackaday.com/2021/11/14/tiny-talisman-warns-wearer-about-uv-exposure/)

Forget Radio! Transmitting with Neutrons
https://hackaday.com/2021/11/14/forget-radio-transmitting-with-neutrons/

Throughout history, people have devised ways to send information across long distances. For centuries we relied on smoke signals, semaphores, and similar physical devices. Electricity changed everything. First the telegraph …read more (https://hackaday.com/2021/11/14/forget-radio-transmitting-with-neutrons/)

Hackaday Links: November 14, 2021
https://hackaday.com/2021/11/14/hackaday-links-november-14-2021/

If you’re an infrastructure dweeb, it’s hard to drive past an electrical substation and not appreciate the engineering involved in building something like that. A moment’s thought will also make …read more (https://hackaday.com/2021/11/14/hackaday-links-november-14-2021/)

Hexagonal Mirror Array Hides Hidden Message
https://hackaday.com/2021/11/14/hexagonal-mirror-array-hides-hidden-message/

[Ben Bartlett] recently got engaged, and the proposal had a unique bit of help in the form of a 3D-printed hexagonal mirror array, whose mirrors are angled just right to …read more (https://hackaday.com/2021/11/14/hexagonal-mirror-array-hides-hidden-message/)

Propel Paper Planes, Bisect Sausages With Electromagnets
https://hackaday.com/2021/11/14/propel-paper-planes-bisect-sausages-with-electromagnets/

Are you still launching paper airplanes using your hands? That’s like a baby’s toy! [Tom Stanton] and his homebrew electromagnetic rail launcher are sure to bring your paper airplane game into …read more (https://hackaday.com/2021/11/14/propel-paper-planes-bisect-sausages-with-electromagnets/)

Treasure Hunting with a Handful of Common Components
https://hackaday.com/2021/11/15/treasure-hunting-with-a-handful-of-common-components/

Sometimes simpler is better — when you don’t need the the computational power of an onboard microcontroller, it’s often best to rely on a simple circuit to get the job …read more (https://hackaday.com/2021/11/15/treasure-hunting-with-a-handful-of-common-components/)

Teensy MIDI Air Harp Sounds Huge
https://hackaday.com/2021/11/15/teensy-midi-air-harp-sounds-huge/

Some of the coolest sounds come from wild instruments like orchestra strings, fretless basses, and theremins — instruments that aren’t tied down by the constraints of frets and other kinds …read more (https://hackaday.com/2021/11/15/teensy-midi-air-harp-sounds-huge/)

Mining and Refining: Pure Silicon and the Incredible Effort It Takes to Get There
https://hackaday.com/2021/11/15/mining-and-refining-pure-silicon-and-the-incredible-effort-it-takes-to-get-there/