Jj thomson atomic theory

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How did j.j. thomson discover electrons
J.j. thomson full name

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Joseph John Thomson

Joseph John Thomson, better known as J. J. Thomson, was a British physicist who first theorized and offered experimental evidence that the atom is a divisible entity rather than the basic unit of matter, as was widely believed at the time. A series of experiments with cathode rays he carried out near the end of the 19th century led to his discovery of the electron, a negatively charged atomic particle with very little mass. Thomson received the Nobel Prize in Physics in 1906 for his work exploring the electrical conductivity of various gases.

The son of a bookseller, Thomson was born on December 18, 1856, in Cheetham Hill, located just north of Manchester, England. He entered Owens College when he was 14 years old, where he became interested in experimental physics, though he had initially intended to pursue a career in engineering. Thomson’s father died only a few years into his college studies, making it financially difficult for Thomson to remain in school. However, through the efforts of his family and scholarships he continued at Owens College until 1

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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.

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