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Apr 11, 2024 · J.J. Thomson, English physicist who helped revolutionize the knowledge of atomic structure by his discovery of the electron (1897). He received the Nobel Prize for Physics in 1906 and was knighted two years later. Learn more about his life, career, and legacy.
- George Paget Thomson
Sir Joseph John Thomson OM FRS [1] (18 December 1856 – 30 August 1940) was a British physicist and Nobel Laureate in Physics, credited with the discovery of the electron, the first subatomic particle to be found.
- George Paget Thomson, Joan Paget Thomson
- Trinity College, Cambridge
Apr 2, 2014 · J.J. Thomson was a Nobel Prize-winning physicist whose research led to the discovery of electrons. Updated: May 26, 2021. Photo: Universal History Archive/Getty Images. (1856-1940) Who Was...
J.J. Thomson's experiments with cathode ray tubes showed that all atoms contain tiny negatively charged subatomic particles or electrons. Thomson's plum pudding model of the atom had negatively-charged electrons embedded within a positively-charged "soup."
- How can we calculate e/m value of elactron?The angle of deflection in the thomson experiment depends on the e/m value. This is because F = ma So a = F/m F is proportional to e So a is propor...
- comparing thomsons exp. and rutherford's exp. why does the rays deflect in rutherford's model due to...@Afeefdk Because they very different experiments...Look at both the experiments. In the Thomson's experiment, J.J Thompson didn't strike the cathod...
- In th Rutherford experiment, why did he use alpha particles ( He2+) ? wouldn't it have been better i...Rutherford was interested in radio-chemistry (radioactivity) and what it might reveal about the atom. is focus was on alpha particles (from alpha r...
- How Rutherford told that atom is like a solar system?on which base ?Because he used classical physics (although he quantized the angular momentum) to conceive his model....and classical physics is based on intuitive...
- why did we have to name positive ions cations and not anions, since most of the naming in science se...The negatively charged electrode is the anode, this is where the electrons in a current originate. The positively charged electrode is the cathode...
- How did Rutherford make the alpha particles of helium and how did he concentrate those particles so ...He put the radium in a container with only one 'hole' for the alpha particles to get out. Any alpha particles going in other directions simply don'...
- is anode rays consist of proton ?You are right, both kinds of rays are emitted simultaneously. the cathode rays consist of electrons, while the anode/canal rays are the positively...
- Discovery of the Electron – The first subatomic particle. In 1834, Michael Faraday coined the word ion to describe charged particles which were attracted to positively or negatively charged electrodes.
- The Atom as a Plum Pudding. Based on his results, Thomson produced his famous (but incorrect) plum pudding model of the atom. He pictured the atom as a uniformly positively charged ‘pudding’ within which the plums (electrons) orbited.
- Invention of the Mass Spectrometer. In discovering the electron, Thomson also moved towards the invention of an immensely important new tool for chemical analysis – the mass spectrometer.
- Every Hydrogen Atom has only one Electron. In 1907, Thomson established using a variety of methods that every atom of hydrogen has only one electron.
Nov 13, 2019 · On April 30, 1897, British physicist J.J. Thomson announced his discovery that atoms were made up of smaller components. This finding revolutionized the way scientists thought about the...
Feb 2, 2020 · He was awarded the Adams Prize in 1884. Thomson discovered the natural radioactivity of potassium in 1905. In 1906, Thomson demonstrated a hydrogen atom had only a single electron. Thomson's father intended for J.J. to be an engineer, but the family did not have the funds to support the apprenticeship.
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