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J.J. Thomson Essay

745 words - 3 pages

Joseph John Thomson, most commonly known as J.J. Thomson was born in a small suburb known as Cheetham Hills, Manchester on the 18/12/1856 and enrolled at Owens College, Manchester, in 1870, when he was 14. He then entered Trinity College, Cambridge as minor scholar in 1876, where he became a Fellow of Trinity College in 1880, when he was a “second wrangler” (coming second in a maths competition) and Second Smith’s Prizeman. He later became a lecturer in 1883 and Master in 1918 at Trinity College Cambridge. (Nobel Lectures , 1967).
During the 1800s, the field of Chemistry witnessed numerous breakthroughs such as Dmitri Mendeleev publishing the original Periodic Table. The periodic table ...view middle of the document...

When the ray strikes the specifically coated surface it releases, florescent or a bright light. (Chang, 1998)
In some instances, scientists who conducted experiments with the cathode ray tube would include magnets to the outside of the cathode ray tube. When the magnetic field functions and the electric field is neutralised, the ray will strike point A. When the electric field functions and the magnetic field is neutralised, the ray will strike point C. Nevertheless, when both the fields are active (balanced) or the fields are disabled, the ray will strike point B as the magnet and electric fields cancel each other’s fields.
J.J. Thomson was renowned for discovering the electron by conducting series of investigations and experiments designed to study the nature of electric discharge in a high vacuum cathode-ray tube, an area that several scientists were exploring in the late 1800s and early 1900s. (Chemheritage, 2014). He used a cathode ray tube and his knowledge of electromagnetic theory to determine the ratio of mass to electric charge of an individual electron. Electromagnetic Theory states; a moving charged body behaves like a magnet and can...

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