Ambrosianus L 99 sup., p. 190, ll. 14–23, UV fluorescence image by Lumière Technology. Upside-down Latin overtext in dark brown and Greek undertext in light brown.
" data-medium-file="https://hackaday.com/wp-content/uploads/2023/04/uv_fluorescence_palimpsest_ambrosianus_l_99_ll_14-23.jpeg?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2023/04/uv_fluorescence_palimpsest_ambrosianus_l_99_ll_14-23.jpeg?w=800">During the Middle Ages much of Ancient Greek and Roman scientific, legal and similarly significant texts written on parchment were commonly erased, mostly because of the high cost of new …read more (https://hackaday.com/2023/04/25/reading-ptolemys-treatise-on-the-meteoroscope-on-palimpsests-after-centuries-of-recovery-attempts/)

Bass Reactive LEDs For Your Car
https://hackaday.com/2023/04/25/bass-reactive-leds-for-your-car/

[Stephen Carey] wanted to spruce up his car with sound reactive LEDs but couldn’t quite find the right project online. Instead, he wound up assembling a custom bass reactive LED …read more (https://hackaday.com/2023/04/25/bass-reactive-leds-for-your-car/)

Vectrex Light Pen Works Without a Raster
https://hackaday.com/2023/04/26/vectrex-light-pen-works-without-a-raster/

Sometimes the simplest of projects end up revealing the most interesting of things, as for example is the case with [Ryo Mukai]’s light pen for the Vectrex console. It’s an …read more (https://hackaday.com/2023/04/26/vectrex-light-pen-works-without-a-raster/)

The Goalie Mask, Reenvisioned
https://hackaday.com/2023/04/26/the-goalie-mask-reenvisioned/

The goalie mask, at least the retro-styled fiberglass types from the 60s and 70s, hasn’t been used in hockey for about 50 years —  it’s instead made many more appearances …read more (https://hackaday.com/2023/04/26/the-goalie-mask-reenvisioned/)

Parametric Design with Tinkercad
https://hackaday.com/2023/04/26/parametric-design-with-tinkercad/

Tinkercad is like the hamburger helper of 3D design. You hate to admit you use it, and you know you should put in more effort, but — darn it — …read more (https://hackaday.com/2023/04/26/parametric-design-with-tinkercad/)

Nuke Your Own Uranium Glass Castings in the Microwave
https://hackaday.com/2023/04/26/nuke-your-own-uranium-glass-castings-in-the-microwave/

Fair warning: if you’re going to try to mold uranium glass in a microwave kiln, you might want to not later use the oven for preparing food. Just a thought. …read more (https://hackaday.com/2023/04/26/nuke-your-own-uranium-glass-castings-in-the-microwave/)

Smoke Some Weeds: Lasers Could Make Herbicide Obsolete
https://hackaday.com/2023/04/26/smoke-some-weeds-lasers-could-make-herbicide-obsolete/

We’ve all tangled with unwelcome plant life at one point or another. Whether crabgrass infested your lawn, or you were put on weeding duty in your grandfather’s rose patch, you’ll …read more (https://hackaday.com/2023/04/26/smoke-some-weeds-lasers-could-make-herbicide-obsolete/)