the experiment produced barium, an element whose nucleus contains around half the number of particles — about 137. How could adding one neutron to uranium end up producing an atom half the size?

An air contrast barium enema is a test for your colon. These days, doctors don’t use it as often to look for colorectal cancer. Instead, it’s more common to get a colonoscopy, which can find ...

High-temperature superconducting magnets made from REBCO, an acronym for rare-earth barium copper oxide ... which combine two hydrogen atoms to form an atom of helium, releasing a neutron in ...