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The first known writer to compare Thomson's model to a plum pudding was an anonymous reporter in an article for the British pharmaceutical magazine The Chemist and Druggist in August 1906. While the negative electricity is concentrated on the extremely small corpuscle, the positive electricity is distributed throughout a considerable volume.
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The Thomson problem is a natural consequence of J. J. Thomson's plum pudding model in the absence of its uniform positive background charge. [ 12 ] "No fact discovered about the atom can be trivial, nor fail to accelerate the progress of physical science, for the greater part of natural philosophy is the outcome of the structure and mechanism ...
To explain the overall neutral charge of the atom, he proposed that the corpuscles were distributed in a uniform sea of positive charge. In this "plum pudding model", the electrons were seen as embedded in the positive charge like raisins in a plum pudding (although in Thomson's model they were not stationary, but orbiting rapidly). [33] [34]
English: A simple diagram illustrating the Geiger-Marsden experiment. The left side shows the Thomson scattering pattern that the experimenters expected to see, given the plum pudding model of the atom. The right side shows the actual results, with Rutherford's new planetary model.
This diagram was created with a text ... == Summary == The plum pudding model of the atom — negative charges (electrons) embedded in a larger structure of positive ...
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