Scientist builds mini universe of 24k atoms to show time can be measured without a clock

At the University of Birmingham, Giovanni Barontini has crafted a captivating mini universe using 24,000 chilled rubidium atoms. This groundbreaking experiment reveals that time can be gauged via entropy variations, offering a fresh perspective beyond traditional clocks. The model aids in probing the inconsistencies between general relativity and quantum mechanics in timing measurements.