G. A. Kazakov

The article describes a new way to excite the nucleus of thorium-229 using a very weak, steady laser beam. Instead of waiting for the nucleus to glow, the team detected the laser light absorbed by the crystal, making the signal faster and clearer. This opens the door to a solid-state nuclear clock t

Physicists have built a clock where the pendulum is an atomic nucleus. Its ticking is almost immune to disturbances. It's accurate to 10⁻¹⁵ seconds per day, setting new limits on dark matter particles.