Nagasaki proposed a model of the atom that had a small nucleus by a ring of electrons.
Nagaoka Hantaro developed the Saturnian system in 1904. The atom was unstable because it kept on radiating continuously. The electron would lose energy and spiral into the nucleus.
In 1903 Nagasaki made a model of the atom that had a small nucleus surrounded by a ring of electrons. The Saturnine was the first to have a nucleus. It was discovered in 1911.
In 1909 he published a paper on solenoids.
In 1924 he was the first successful synthesis of gold produced from mercury by neutron bombardment.
In 1929 Nagasaki became the first person to describe meteor burst communications.