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American Institute of Physics: Discovery of the Electron
Use this resource to read about the "Experiments by J.J. Thomson in 1897 [which] led to the discovery of a fundamental building block of matter." This exhibit is organized into several sections, including: "Mysterious Rays" and "1897...
Frostburg State University
General Chemistry Online: Atoms & Ions
This site from the General Chemistry Online of the Frostburg State University provides a review of the history of atomic theory, the discovery of the electron, and the discovery of the nucleus. Details on weighing atoms, ion charges,...
Sophia Learning
Sophia: Jj Thomson: Lesson 2
This lesson explains JJ Thomson's experiments that led to the discovery of the electron. It is 2 of 3 in the series titled "JJ Thomson."
Famous Scientists
Famous Scientists: Walter Schottky
Learna about the life and work of the German physicist who played a major role in developing the theory of electron and ion emission phenomena.
CK-12 Foundation
Ck 12: Physical Science: Thomson's Atomic Model
[Free Registration/Login may be required to access all resource tools.] Thomson's discovery of the electron and his plum pudding model of the atom.
Sophia Learning
Sophia: Jj Thomson: Lesson 1
This lesson explains JJ Thomson's experiments that led to the discovery of the electron. It is 1 of 3 in the series titled "JJ Thomson."
Stanford University
Stanford Encyclopedia: j.j. Thomson and the Electron
This site from the Stanford Encyclopedia of Philosophy offers a historical review of the discovery of the electron by J. J. Thomson and how he came to his conclusions performing experiments witha cathode ray tube.
Frostburg State University
General Chemistry Online: Discovery of the Electron
This site from General Chemistry Online of the Frostburg State University provides an explanation of Thomson's discovery of the electron using a cathode ray tube and also his plum cake model of the atom.