The universe comes with a built‑in speed cap, a hard limit that shapes everything from how stars shine to how cause and ...
The speed of light is the ultimate limit of motion, yet against the vast scale of the cosmos it becomes painfully inadequate.
A tiny optical device built into a silicon chip has achieved the slowest light propagation on a chip to date, reducing the speed of light by a factor of 1,200 in a study reported in Nature Photonics ...