# Ch 13: Relativity in Time and Space

Watch online video lessons to learn about general relativity, time dilation, space contraction and more. Take the quizzes that follow each lesson to test your knowledge of relativity in time and space.

## Relativity in Time and Space - Chapter Summary and Learning Objectives

E = mc^2 is a familiar enough equation, but do you know what it means? Use the lessons in this chapter to explore the relationship between mass, energy and the speed of light. Instructors help you examine Einstein's equation by first demonstrating why the classical theory of relativity breaks down when working with the high speeds and expansive distances experienced in space. They also show you how Einstein's efforts to account for the constant speed of light would result in the equation we're so familiar with today. Lessons in this chapter can introduce you to:

• General relativity of time and distance
• Special relativity and the speed of light
• Space contraction and time dilation
• The relativity of energy and mass

Video Objectives
Classical Relativity: Distance and Time Relation to the Observer Learn how this theory explains the relativity of distance and time for different observers.
Light and Relativity: Breakdown of Classical Relativity with Light Example Explore Einstein's theory of relativity as it relates to the constant speed of light.
Time Dilation: Description, Explanation & Examples Assess the effect of high speeds on time when observed from a stationary position.
Space Contraction: Shortening Distance for Fast Moving Objects Discover why an object's length shortens at high speeds when observed from a stationary position.
Mass and Energy: Description and Interchangeable Relationship Study Einstein's theory explaining why energy and mass are interchangeable.
General and Special Relativity: Theory and Examples Explore the effect of gravity on the acceleration and speed of light.

Final Exam
Chapter Exam

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