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Evolution of atomic models papa_antoniade_capodimonte, Maxwell theory of light emission whit this energy packets ΔE = h·ν, high concentration of positive charge should be gathered into the nucleus, atom as a sphere of matter loaded with positive charge, Thomson discovered electrons as negative charges very lighter than the atom, Planck it explained Maxwell theory of light emission, positive nucleus constitued by one or more protons, Cathode rays travel from cathod, Rutherford and coworkers discovered positive nucleus, one or more protons dependency of their nature, Gold foil experiment gave as results 1/8000 alfa particles bouncing back
Applet showing the expected result for Thomson's pudding model in gold foil experiment
applet on the interpretation of gold foil experiment