More Lessons for High School Physics

A series of high school Physics lectures: Introduction to Special Relativity, Einstein's Two Postulates of Special Relativity, Simultaneity, Time Dilation, Length Contraction.

Introduction to Special Relativity

Describes the 3 effects of relativity (time dilation, length contraction and mass change), and why we say they are relative. Introduces the Lorentz factor as and looks at the Lorentz factor changes with speed.

Explains the meaning of the two postulates and these simple postulates lead to a determination of the Lorentz factor for the case of time dilation. Introduces the notion of proper time, and derives the time dilation equation.

Length Contraction

Relativistic length contraction with examples

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