26 sett 1932 anni - James Chadwick bombarded beryllium atoms with alpha particles.
Descrizione:
In 1932, James Chadwick bombarded beryllium atoms with alpha particles. An unknown radiation was produced. Chadwick interpreted this radiation as being composed of particles with a neutral electrical charge and the approximate mass of a proton. This particle became known as the neutron.Aggiunto al nastro di tempo:
Data:
26 sett 1932 anni
Adesso
~ 91 years ago
