22 mar 1932 año - James Chadwick calculates the mass of a nucleus.
Descripción:
In 1932 James Chadwick used math to calculate the mass of a neutral particle in the nucleus of an atom. We knew before this that there was something other than a proton in the nucleus that had great mass, but Chadwick was the first person to calculate it's weight and give it a name.Añadido al timeline:
fecha:
22 mar 1932 año
Ahora mismo
~ 92 years ago
