add section on particle / nuclear

[landgreen]

issues already covered in chemistry? no synergy with other physics sections except quantum

nuclear subatomic particles particle properties charge, mass, spin nuclear equations (conservation of charge, lepton number, energy, ...) alpha, beta, gamma radiation

standard model boson vs. fermion force carrier particles 4 fundamental forces

weak nuclear force radioactivity

strong nuclear force nuclear forces nuclear stability

half-life nuclear fission nuclear fusion nuclear power

front page layout make a section for: particles quantum

move units, vectors to motion section