A good way to introduce quantum theory is to profile the individuals who pioneered it. This program focuses on Niels Bohr's contributions to our understanding of the atom and the behavior of subatomic particles according to quantum mechanics. Outlining theoretical precursors of quantum physics-including the ideas of John Dalton and J. J. Thomson-and a brief biography of Bohr, the video shows how the Danish physicist devised his atomic model and sheds light on his first and second postulates. Clever animation and helpful summaries enrich this valuable survey of the history and legacy of Bohr's achievements.

Encoded with permission for digital streaming by Infobase on June 03, 2009. Learn360 is distributed by Infobase for Films for the Humanities & Sciences, Cambridge Educational, Meridian Education, and Shopware.

Historical Development of Atomic Theories (5:21) -- Biography of Niels Bohr (3:55) -- Bohr's Model of the Atom: First Postulate (5:32) -- Bohr's Model of the Atom: Second Postulate (4:09) -- Beyond Bohr (5:03).