XXth century_physics

John William Nicholson (1911): atoms consist of small spheres
of negative electricity rotating in a ring about a smaller sphere of
positive electricity, the atomic nucleus. Vector sum of the
accelerations of all the electrons rotating in the ring is zero. The
simplest primary atoms are:
Coronium Co mass 0.51282 2 electrons
Hydrogen H mass 1.008 3 electrons
Nebulium Nu mass 1.6281 4 electrons
Protofluorine Pf mass 2.3615 5 electrons
All known chemical atoms are composed of these primary atoms, e.g.
Helium He = NuPf
Uranium = 8{Nu 2(Pf H) 3 }4{He 2Nu 2(Pf H) 3}
Nicholson found excellent agreement with measured values of atomic
masses