US team breaks record for most accurate measurement of time
University of Colorado researchers have built the world's most accurate atomic clock, breaking their own record. Researchers packed 10,000 strontium atoms into a 3D grid at 1,000 times the density of 1D clocks, making it 20 times faster in time measurement. The 3D cube trapped using lasers at -273 ÂºC, measures time by counting the atoms' oscillations.