George paget thomson

J.j. thomson death
J.j. thomson discovery of electron
J.j. thomson discovery

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J. J. Thomson

Sir Joseph John "J.J." Thomson, OM, FRS (18 December 1856 – 30 August 1940) was a Britishphysicist and Nobel laureate. He discovered the electron and isotopes, and invented the mass spectrometer. He won the Nobel Prize in Physics in 1906 for his discovery of the electron and his work on how electricity works in gases. Joseph John Thomson in 1893 said: "There is no other branch of physics which affords us so promising an opportunity of penetrating the secret of electricity."

In 1897, Thomson showed that cathode rays were made of a previously unknown negatively charged particle of very small mass compared to its electric charge. It was later called the electron and was the first subatomic particle to be found. Thomson also found the first evidence for isotopes of a stable (non-radioactive) element in 1913, while studying anode rays (positive cations).

In atomic theory he suggested the idea that atoms were spheres of evenly spread positive charge, where an individual negatively charged electron resided. He later concluded there was more than one negatively char

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J. J. Thomson

English physicist (1856–1940)

This article is about the Nobel laureate and physicist. For the moral philosopher, see Judith Jarvis Thomson.

Sir Joseph John Thomson (18 December 1856 – 30 August 1940) was an English physicist who received the Nobel Prize in Physics in 1906 for his discovery of the electron, the first subatomic particle to be found.

In 1897, Thomson showed that cathode rays were composed of previously unknown negatively charged particles (now called electrons), which he calculated must have bodies much smaller than atoms and a very large charge-to-mass ratio.^[1] Thomson is also credited with finding the first evidence for isotopes of a stable (non-radioactive) element in 1913, as part of his exploration into the composition of canal rays (positive ions). His experiments to determine the nature of positively charged particles, with Francis William Aston, were the first use of mass spectrometry and led to the development of the mass spectrograph.^[1]^[2]

Thomson was awarded the 1906 Nobel Prize in Physics for his wor

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J.J. Thomson (1856 - 1940)

Sir Joseph John Thomson, often known as J.J. Thomson, was born on December 18, 1856, in Cheetham Hill, a suburb of Manchester, England, to Scottish parentage. His father, a bookseller, wanted him to be an engineer, but did not have the fee for J.J.'s apprenticeship. So Thomson entered Owens College (now the Victoria University) in Manchester. His professor of mathematics recognized his brilliance, and he was encouraged to apply for a scholarship at Trinity College in Cambridge. He was accepted in 1876 and became a Fellow in 1880, when he became Second Wrangler (a student who has completed the third year of mathematics with first-class honors. The highest-scoring student is named the Senior Wrangler, the second-highest is the Second Wrangler, etc.). He was chosen Master of Trinity in 1918 and guided the college until shortly before his death.

In 1884, Thomson became Cavendish Professor of Physics. In 1890, he married Rose Paget, and he had two children with her. One of his students was Ernest Rutherford, who would later succeed him in the post.

Thoms