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Curated Video
Thomson's Model of Atom: The Plum Pudding Model & Radioactivity
Thomson's Plum Pudding Model and Radioactivity Discovery
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br/>
Ba
ckground:
• Atoms were previously thought to be indivisible particles, as proposed b
y John Dalton.
• The discovery of the electron,...
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br/>
Ba
ckground:
• Atoms were previously thought to be indivisible particles, as proposed b
y John Dalton.
• The discovery of the electron,...
Curated Video
J.J. Thomson's Charge-to-Mass Ratio Experiment
In 1897, J.J. Thomson conducted an experiment that led to the discovery of the electron and revolutionized atomic theory by demonstrating that atoms are composed of smaller subatomic particles. Before this, atoms were considered...
Curated Video
Light in a Tube: Exploring Discharge Tube Experiments
Discharge tube experiments are crucial in understanding atomic structure and the discovery of subatomic particles. These experiments involve the interaction of electricity with gases at low pressures, observing cathode rays and their...
Visual Learning Systems
Thompson's Model of Atoms
In this video, we explore the groundbreaking discoveries of JJ Thompson and his plum pudding model of the atom. Thompson's experiments with electric currents and magnetic charges led him to hypothesize the existence of negatively charged...
Annenberg Foundation
Annenberg Learner: Models of the Atom
Animation looking at various models of the atom that have been proposed by J.J. Thomson, Ernest Rutherford, and Niels Bohr, with a brief look at the Quantum Mechanical Model. [2:23]
Other
The Science Classroom: History of the Atom (Atomic Theory)
Looks at the history of models of the atom beginning with Democritus and ending with contemporary understanding of the atom. Covers all major models. [9:02]
Socratica Foundation
Socratica: History of the Atom (Dalton, Thomson, Rutherford, and Bohr Models)
Discusses the history of the atom in chronological order, covering the models postulated by John Dalton, J.J. Thomson, Earnest Rutherford, and Niels Bohr. Illustrations are presented for each model. [6:32]