An international team of researchers recently measured the lifetime of a neutron outside of an atomic nucleus with extraordinary precision. By their measurements, the neutron survived for 14.629 minutes, or 877.75 seconds, give or take a third of a second.
source https://gizmodo.com/physicists-trap-ultracold-neutrons-in-a-bottle-to-see-h-1847870808
একটি মন্তব্য পোস্ট করুন