Who was J. J. Thomson? Everything You Need to Know

Quick Facts

British Celebrities Born In December

Also Known As: Sir Joseph John Thomson

Died At Age: 83

Family:

Spouse/Ex-: Rose Elisabeth Paget

father: Joseph James Thomson

mother: Emma Swindells

siblings: Frederick Vernon Thomson

children: George Paget Thomson, Joan Paget Thomson

Physicists British Men

Died on: August 30, 1940

place of death: Cambridge, England, United Kingdom

Grouping of People: Nobel Laureates in Physics

Notable Alumni: Owens College

City: Lancashire, England

discoveries/inventions: Electrons And Isotopes And Inventing The Mass Spectrometer

More Facts

education: Trinity College, Cambridge, Owens College

awards: Smith's Prize (1880)
Royal Medal (1894)
Hughes Medal (1902)

Nobel Prize for Physics (1906)
Elliott Cresson Medal (1910)
Copley Medal (1914)
Albert Medal (1915)
Franklin Medal (1922)
Faraday Medal (1925)

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1

What is J. J. Thomson known for?

J. J. Thomson is known for his discovery of the electron, which revolutionized the field of physics.
2

What experiment did J. J. Thomson conduct to discover the electron?

J. J. Thomson conducted the cathode ray tube experiment, which led to the discovery of the electron.
3

How did J. J. Thomson's discovery of the electron contribute to the development of the atomic theory?

J. J. Thomson's discovery of the electron provided evidence for the existence of subatomic particles and laid the foundation for the modern atomic theory.
4

What is the plum pudding model proposed by J. J. Thomson?

The plum pudding model, proposed by J. J. Thomson, suggested that atoms consist of a positively charged sphere with negatively charged electrons embedded in it, resembling plums in a pudding.
5

How did J. J. Thomson's work on the electron influence future discoveries in the field of physics?

J. J. Thomson's work on the electron paved the way for further research into subatomic particles and the development of quantum mechanics, leading to significant advancements in the field of physics.

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Childhood & Early Life

Joseph John Thomson was born to Joseph James Thomson and his wife Emma Swindells on 18 December, 1856 in the Cheetham Hill area of Manchester located in Lancashire, United Kingdom. His father was the owner of a bookshop that dealt in antiquarian books. J.J. Thomson had one younger brother.

Thomson was a child prodigy of sorts due to his remarkable grasp of the sciences from an early age. He was allowed to take admission to Owens College in 1870, when he was only 14 years old.

In 1876, at the age of 20 Thomson won a place at Trinity College, University of Cambridge to study mathematics. He received his bachelors degree 4 years later with first class honours and was one of the two students who won the Smith’s Prize, which is a prize meant for students of mathematics and theoretical physics who are engaged in research.

In 1881, he was made a Fellow of Trinity College and 2 years later he completed his MA from Cambridge University. Thomson was also bestowed with the prestigious Adams Prize, which is awarded by Cambridge University to outstanding research efforts.

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Career

Thomson started his career at Trinity College, University of Cambridge, and further enhanced his reputation as one of the most gifted mathematicians through his efforts. It was in 1884 that the members of the Royal Society elected him as a member and by the end of the same year Thomson was appointed as the Cavendish Professor of ExperimentalPhysics at the University of Cambridge.

His earliest research work was based on the structure of atoms and his first published paper was titled ‘Motion of Vortex Rings’ and in that particular paper he used pure mathematics to describe the vortex theory in relation to atomic structure as propounded by William Thomson.

Much of Thomson’s early research centred on mathematical explanation of chemical phenomena and the result was the 1886 book ‘Applications of Dynamics to Physics and Chemistry’. Six years later he published ‘Researches in Electricity and Dynamism’.

In 1896, Princeton University invited him to deliver lectures on the subjects on which he had worked. The contents of those lectures were all documented in the book ‘Discharge of Electricity through Gases’ that was published the following year.

He undertook the most important original research of his career in the year 1897 when he started is seminal research on cathode rays that led him through different alleys and one of the most significant discoveries out of that research was the discovery of the electron in relation to atoms which changed the face of the natural sciences.

In a series of lectures delivered at the famous University of Yale in 1904, he demonstrated how an atom was structured and also explained the different principles of electricity. In addition to this, Thomson stated that positive rays could be used in order to separate atoms.

He spent the latter part of his career in conducting research on isotopes that led to the discovery of positive ions and later on he went on to make such important discoveries as the radioactivity of the element potassium. On the other hand he was also able to assert that hydrogen did not have more than one electron.

Major Works

J. J. Thomson’s most important work centred around the research on cathode rays that led to the discovery of the electron and he won the Nobel Prize in Physics in 1906 for this path breaking discovery.

Awards & Achievements

Thomson won the Royal Medal in 1894.

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The Royal Society of London awarded J. J. Thomson the Hughes Medal in 1902.

In 1906, he won the Nobel Prize in Physics for his work on the discovery of the electron.

The Franklin Institute awarded him the Elliott Cresson Medal in 1910 and 12 years later the same institute gave him the Franklin Medal.

The Royal Society awarded him the Copley Medal in 1914 and a year later the Royal School of Arts awarded him the Albert Medal.

In 1918, Thomson was made a ‘Master of Trinity College’.

Personal Life & Legacy

J. J. Thomson married Rose Elisabeth Paget in 1890. They had two children- a son named George Paget Thomson and a daughter named Joan Paget Thomson. The son went on to become a Nobel Prize winning physicist.

He died at the age of 83 on 30 August, 1940. His body was buried at the famous Westminster Abbey.

Facts About J. J. Thomson

Thomson was known for his love of cycling and often rode his bicycle to work at the Cavendish Laboratory in Cambridge.

Thomson had a fascination with puzzles and brain teasers and would often challenge his colleagues to solve them during breaks from his research.

Despite his groundbreaking work in physics, Thomson also had a passion for gardening and spent many hours cultivating his garden at home.

In addition to his scientific achievements, Thomson was a talented pianist and enjoyed playing classical music in his free time.

J. J. Thomson Biography

You wanted to know

What is J. J. Thomson known for?

What experiment did J. J. Thomson conduct to discover the electron?

How did J. J. Thomson's discovery of the electron contribute to the development of the atomic theory?

What is the plum pudding model proposed by J. J. Thomson?

How did J. J. Thomson's work on the electron influence future discoveries in the field of physics?