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Topic: Fundamental Theory

What theories endeavor to explain how the physical world works? How did Einstein's work change our understanding of the cosmos? What can we learn by studying subatomic particles? Why do scientists believe the universe is expanding? What is string theory? Explore these questions and more in this collection of Fundamental Theory resources.

Resource Highlight

Motion and Relativity

Motion and Relativity

Type: QuickTime Video

This video from the American Museum of Natural History illustrates how motion is described relative to a frame of reference, and how Einstein's special theory of relativity is needed to describe the motion of objects traveling near the speed of light.

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