Fluorinated borate crystal converts laser into deep UV for portable, high-precision nuclear clocks: 1,000X faster internet, obsoletes GPS

https://www.techradar.com/pro/1-000x-faster-internet-new-chinese-crystal-breakthrough-could-make-the-worlds-gps-obsolete-overnight

"crystal achieves 145.2 nm wavelength (previous record 150), dropping below 148.3 needed to trigger thorium-229 nucleus, key element for nuclear clocks... GPS relies on external satellite signals easily jammed, spoofed, blocked (underwater or in deep space), replaced by measuring every micro-movement against an inertial navigating extremely precise nuclear clock without ever needing external signal... leap in internet speed isn't about cables themselves, but about reducing buffer time between signals"

Related: Physicists revive 1990s laser concept to propose a next-generation atomic clock
https://phys.org/news/2026-04-physicists-revive-1990s-laser-concept.html