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According to this theoretical system, often referred to as the" plum pudding" model, the atom is a sphere of uniformly distributed positive charge about one angstrom in diameter.
Everyone at that time imagined the atom as a "plum pudding." That is, it was roughly the same consistency throughout, with negatively-charged electrons scattered about in it like raisins in a pudding.
This was inconsistent with the plum-pudding model of the atom, in which the atom was viewed as tiny electrons embedded in a dispersed pudding of positive charge.
He said the negatively charged electrons were embedded in a sphere of positive charge so the charges were balanced. This became known as the 'plum pudding' model of the atom and is shown in the diagram ...
Top: Expected results: alpha particles passing through the plum pudding model of the atom undisturbed. Bottom: Observed results: a small portion of the particles were deflected, indicating a small ...
Top: Expected results: alpha particles passing through the plum pudding model of the atom with negligible deflection. Bottom: Observed results: a small portion of the particles were deflected, indicating ...
J. J. Thomson’s “Plum-pudding” Model. After its discovery, the electron was assumed to be a part of the atom. Thomson proposed positive charge was spherically distributed.
XXIV. On the Structure of the Atom: an Investigation of the Stability and Periods of Oscillation of a number of Corpuscles arranged at equal intervals around the Circumference of a Circle; with ...
Atom plum pudding
