- Thomson determined that all matter is made up of tiny particles that are much smaller than atoms. He originally called these particles 'corpuscles,' although they are now called electrons. This discovery upended the prevailing theory that the atom was the smallest fundamental unit.www.biography.com/scientist/jj-thomson
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J.J. Thomson - Experiment, Theory & Life - Biography
Thomson determined that all matter is made up of tiny particles that are much smaller than atoms. He originally called these particles 'corpuscles,' although they are now called electrons.... See more
J.J. Thomson attended Trinity College at Cambridge, where he would come to head the Cavendish Laboratory. His research in cathode rays led to the discovery of the electron, and he … See more
Thomson married Rose Paget, one of his students, in 1890. They had one daughter, Joan, and one son, George Paget Thomson, who went … See more
Joseph John Thomson, who was always called J.J., was born in Cheetham Hill, England, near Manchester, in 1856. His father was a … See more
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History of atomic theory - Wikipedia
WEBThe basic idea that matter is made up of tiny indivisible particles is an old idea that appeared in many ancient cultures. The word atom is derived from the ancient Greek …
Discovery of the electron and nucleus (article) | Khan Academy
WEBJ.J. Thomson's experiments with cathode ray tubes showed that all atoms contain tiny negatively charged subatomic particles or electrons. Thomson proposed the plum …
Early Atomic Theory | History, Scientists & Models - Study.com
WEBNov 21, 2023 · By sending electricity through the cathode ray tube, Thomson showed that the resulting beam of light was composed of extremely tiny, negatively-charged particles.
2.2: Atomic Structure - Chemistry LibreTexts
WEBMay 18, 2021 · In 1897, J. J. Thomson discovered that the existence of the first subatomic particle. He renamed these new negatively charged particles as electrons. To explain …
The History of the Atomic Model: Thomson and the …
WEBThis theory was established by Dalton and the atomists who stated that matter was made up of small indivisible particles known as elements which varied in their nature. The work of Avogadro on the volumes of …
Discovery of the Electron: J. J. Thomson - Le Moyne
WEBBoth of these properties of electrons, their very low mass and their widespread occurrence, had profound effects on scientists' understanding of matter. The small mass indicated that pieces of matter existed which …
Atomic structure - AQA Early ideas about atoms - BBC
WEBNearly 100 years later, J J Thomson carried out experiments and discovered the electron close electron Subatomic particle, with a negative charge and a negligible mass relative …
Atomic Theory I | Chemistry | Visionlearning
WEBJ.J. Thomson and the first subatomic particle. As discussed in our module Early Ideas about Matter, Dalton’s atomic theory suggested that the atom was indivisible, i.e., that it was the smallest particle that made up …
2.4: The Discovery of the Electron - Chemistry LibreTexts
WEBJun 29, 2017 · In 1897, the British physicist J. J. Thomson (1856–1940) proved that atoms were not the most basic form of matter. He demonstrated that cathode rays could be …
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