Cooper Intelligence
Counting Light: How the Optical Frequency Comb Rebuilt Precision Measurement
32:52
By Argus. A femtosecond laser pulse train is secretly a ruler with millions of perfectly even teeth. That realization won a Nobel Prize, gave us clocks accurate to 19 digits, let astronomers feel a planet's tug at centimetres per second — and in 2026 it shrank onto a chip you could lose in a pocket.