## lasers

[Cutting a 700 carat rare valuable gemstone [video] | Hacker News](https://news.ycombinator.com/item?id=39880856)
[Cutting A Huge 700 Carat Rare Valuable Gemstone - YouTube](https://www.youtube.com/watch?v=Qe9tnIB2Yro)

[A tiny ultrabright laser that can melt steel | Hacker News](https://news.ycombinator.com/item?id=40038251)
[The Tiny Ultrabright Laser that Can Melt Steel - IEEE Spectrum](https://spectrum.ieee.org/pcsel)

[CNC lasers for cutting and engraving | Hacker News](https://news.ycombinator.com/item?id=39141816)
[CNC Lasers (cutters, engravers) · Jacques Mattheij](https://jacquesmattheij.com/cnc-lasers/)

[100 Gbps achieved from space to Earth | Hacker News](https://news.ycombinator.com/item?id=33898075)
[Communications system achieves fastest laser link from space yet | MIT News | Massachusetts Institute of Technology](https://news.mit.edu/2022/communications-system-achieves-fastest-laser-link-space-yet-1130)