Lecture 14 - Introduction to the Four-Vector
recorded by: Yale University
published: June 3, 2010, recorded: October 2006, views: 3810
released under terms of: Creative Commons Attribution No Derivatives (CC-BY-ND)
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The four-vector is introduced that unifies space-time coordinates x, y, z and t into a single entity whose components get mixed up under Lorentz transformations. The length of this four-vector, called the space-time interval, is shown to be invariant (the same for all observers). Likewise energy and momentum are unified into the energy-momentum four-vector.
Reading assignment: Relativity Notes: Shankar, 2006 [PDF]
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