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Christmas pudding is sweet, dried-fruit pudding traditionally served as part of Christmas dinner in Britain and other countries to which the tradition has been exported. It has its origins in medieval England, with early recipes making use of dried fruit, suet, breadcrumbs, flour, eggs and spice, along with liquid such as milk or fortified wine ...
The plum pudding model was the first scientific model of the atom with internal structure. It was first proposed by J. J. Thomson in 1904 following his discovery of the electron in 1897, and was rendered obsolete by Ernest Rutherford 's discovery of the atomic nucleus in 1911. The model tried to account for two properties of atoms then known ...
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 ...
Kennedy Island (local name Kasolo Island, also known as Plum Pudding Island), is a 1.17 hectares (2.9 acres), uninhabited island in Solomon Islands that was named after John F. Kennedy, following an incident involving Kennedy during his World War II naval career. Kennedy Island lies 15 minutes by boat from Gizo, the provincial capital of the ...
The Plumb-pudding in danger, or, State Epicures taking un Petit Souper is an 1805 editorial cartoon by the English artist James Gillray. The popular print depicts caricatures of the British Prime Minister William Pitt the Younger and the newly-crowned Emperor of France Napoleon , both wearing military uniforms, carving up a terrestrial globe ...
While in Thomson's plum pudding model it is mathematically possible that an alpha particle could be deflected by more than 90° after 10,000 collisions, the probability of such an event is so low as to be undetectable. This extremely small number shows that Thomson's model cannot explain the results of the Geiger-Mardsen experiment of 1909.
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). [32] [33]
In 1904, Thomson suggested that the atom was a sphere of uniform positive electrification, with electrons scattered through it like plums in a pudding, giving rise to the term plum pudding model. Nagaoka rejected Thomson's model on the grounds that opposite charges are impenetrable.