Lecture 14 - Introduction to the Four-Vector

author: Ramamurti Shankar, Department of Applied Physics, School of Engineering and Applied Science, Yale University
recorded by: Yale University
published: June 3, 2010,   recorded: October 2006,   views: 3802
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]

Resources: Problem Set 7 [PDF] Problem Set 7 Solutions [PDF] Relativity Notes: Crib Sheet [PDF] Relativity Notes [PDF]

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