JJ Thomson

and His Amazing Discoveries and Contributions to Science

In 1904 Thomson suggested a model of positive matter in which electrons are positioned electrostatic forces.

His assistant, Francis Aston, developed Thomson's instrument further and with the improved version was able to discover isotopes-- atoms of the same element with different atomic weights-in a large number of nonradioactive elements.

In 1987 he had showed that cathode rays , radiation emitted in a low pressure glass tube when a voltage is applied between two metal plates , consist of particles, electrons were part of the atom.

Thomson's early interest in atomic structure was reflected in his Treatis on the Motion of Vortex Rings which won him the Atoms Prize in 1884.

His book,Conduction of Electricity through Gases, published in 1903 was described by Lord Rayleigh as a review of "Thomson's great days at the Cavendish Laboratory."

He discovered a method for separating different kinds of atoms and molecules by the use of positive rays, an idea developed by Aston, Dempster and others towards the discovery of many isotopes.

Thomson's Personal Life

Born in Cheethem Hill,Manchester UK on December 18th 1856.

He had attended Owens College also in Manchester as well however.

Recommended to Trinity Cambridge

Died on august 30th 1940 with a Nobel Prize in Physics.

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