For decades, atomic clocks have been the pinnacle of precision timekeeping, enabling GPS navigation, cutting-edge physics ...

JILA researchers are pioneering a nuclear clock using thorium-229, which offers unprecedented stability compared to atomic ...

OF the rare gases, argon is the only one of which the crystal structure is known (F. Simon and V. Simson, Zeit. f. Phys., 25, 160; 1924). We have now been able to determine the crystal structure ...

He suggested that an atom was a tiny solid ball. He published his ideas in 1803. This atomic model has changed over time. Scientists used the model to make predictions. Sometimes the results of ...