Boise State University
Boise State University: Atoms: A Virtual Field Trip Through Time and Space
Learn about the models of the atom that have been proposed throughout history. Presents Democritus, John Dalton, J.J. Thomson, Ernest Rutherford, Niels Bohr, and the modern theory of the atom. Sections are accompanied by journal...
Other
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...
Khan Academy
Khan Academy: Discovery of the Electron and Nucleus
Learn about Thomson's cathode ray experiment and the plum pudding model and Rutherford's gold foil experiment.
Nobel Media AB
The Nobel Prize: The Nobel Prize in Physics 1905
This Nobel E-Museum website commemorates the work of Philipp von Lenard and his Nobel prize achievement. This detailed resource includes a biography, Lenard's Nobel Lecture, and the "The Nobel Prize in Physics 1905 Presentation Speech."
Nobel Media AB
The Nobel Prize: J. J. Thomson Nobel Lecture: Carriers of Negative Electricity
At this site from The Nobel Foundation you can download and read Joseph John Thomson's Nobel Lecture, "Carriers of Negative Electricity" (in pdf format).
Other
Le Moyne College: Carriers of Negative Electricity
A transcript of J.J. Thomson's Nobel Lecture in Physics, December 11, 1906 on the electron.
Other
Siyavula Education: Everything Maths & Science: Models of the Atom
Discusses models of the atom developed by John Dalton, J.J. Thomson, Ernest Rutherford, Niels Bohr, and James Chadwick. Includes clear illustrations and a short comprehension exercise at the end.
Texas Education Agency
Texas Gateway: Atoms, Elements and the Periodic Table: The Atomic Model [Pdf]
A slideshow looking at the contributions of scientists over time to our understanding of atomic theory. Looks at models of the atom developed by Democritus, John Dalton, J.J. Thomson, Ernest Rutherford, Niels Bohr, and James Chadwick, as...
Other
Crocodile Clips: Absorb Chemistry: History of the Atom
A tutorial that presents models of the atom proposed by John Dalton, J.J. Thomson, Ernest Rutherford, and Niels Bohr. Each is supported by an animated illustration. Includes comprehension questions and a quiz at the end.
Tom Richey
Slide Share: Atomic Models: Everything You Need to Know
A detailed slideshow for Grade 8 students that looks at the history of our understanding of atoms. Looks at the ideas presented by Democritus, John Dalton, J.J. Thomson, Ernest Rutherford, and Niels Bohr, and the modern-day wave model. A...
Tom Richey
Slide Share: Atomic Structure
Slideshow looking at the history of models of the atom, including those proposed by John Dalton, J.J. Thomson, Ernest Rutherford, Niels Bohr, and James Chadwick. Discusses subatomic particles, including the numbers of protons, neutrons,...
CK-12 Foundation
Ck 12: Chemistry: Electrons
[Free Registration/Login may be required to access all resource tools.] Explains the determination of properties of the electron.
Michigan Technological University
Michigan Technological University: Sir Joseph John Thomson
A biography of J.J. Thomson's life and accomplishments.
CK-12 Foundation
Ck 12: Chemistry: Thomson's Atomic Model
[Free Registration/Login may be required to access all resource tools.] Explains the idea of a scientific model and the development of Thomson's plum pudding model of the atom.
Wolfram Research
Wolfram Science World: Sir Joseph John Thomson (1856 1940)
This site provides a brief biography of the english physicist J.J. Thomson.
Other
A Short History of the Atom
A classroom wiki where students present profiles of scientists who developed models of the atom or who contributed to the understanding of atomic theory. Covers Democritus, Aristotle, John Dalton, J.J. Thomson, Ernest Rutherford, Marie...
Science Struck
Science Struck: Plum Pudding Model
Describes J.J. Thomson's theory of atomic structure, called the 'Plum Pudding Model,' and how it was disproved by Ernest Rutherford.