Sentence examples for pudding model from inspiring English sources

(Ranking: 3) Rutherford's discovery of the nucleus When Ernest Rutherford was experimenting with radioactivity at the University of Manchester in 1911, atoms were generally believed to consist of large mushy blobs of positive electrical charge with electrons embedded inside -- the "plum pudding" model.

Thomson subsequently proposed his "plum pudding" model of the atom, but that model could neither predict nor explain observed atomic spectra such as the Balmer spectrum of hydrogen.

This became known as the plum pudding model.

He had more success with younger physicists like the Australian William Lawrence Bragg, and New Zealand's Ernest Rutherford, whose 1911 Rutherford model of the atom had challenged Thomson's 1904 plum pudding model.

To explain the overall neutral charge of the atom, he proposed that the corpuscles were distributed in a uniform sea of positive charge; this was the plum pudding model as the electrons were embedded in the positive charge like plums in a plum pudding (although in Thomson's model they were not stationary).

Given the very small mass of the electrons, the high momentum of the alpha particles, and the low concentration of the positive charge of the plum pudding model, the experimenters expected all the alpha particles to pass through the metal foil without significant deflection.

Such large deflections were inconsistent with the plum-pudding model.

In the process, the Rutherford atomic model supplanted the so-called plum-pudding model of atomic structure; the latter is known as the Thomson atomic model because of the strong support Thomson gave it for a few years.

Popularly known as the plum-pudding model, it had to be abandoned (1911) on both theoretical and experimental grounds in favour of the Rutherford atomic model, in which the electrons describe orbits about a tiny positive nucleus.

According to the Thomson atomic model, often referred to as the "plum-pudding" model, the atom is a sphere of uniformly distributed positive charge about one angstrom in diameter (see figure).

The Rutherford model supplanted the "plum-pudding" atomic model of English physicist Sir J.J. Thomson, in which the electrons were embedded in a positively charged atom like plums in a pudding.