A new comb-like computer chip could be the key to equipping drones, smartphones and autonomous vehicles with military-grade positioning technology that was previously confined to space agencies and research labs.
Scientists have developed a "microcomb chip" — a 5 millimeter (0.2 inches) wide computer chip equipped with tiny teeth like those on a comb — that could make optical atomic clocks, the most precise timekeeping pieces on the planet, small and practical enough for real-world use.
