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Two Postulates that must be learned befor PHYS152 Final Exam!
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The Principle of Relativity
The laws of physics are the same for all observers.
(Moving at a constant velocity relative to each other).
The Constancy of the Speed of Light
The speed of light is constant, regardless of how fast the source of light or the observer is moving.
The Principle of Relativity (Lecture Definition)
All the laws of physics are the same in all inertial reference frames.
The Constancy of the Speed of Light (Lecture Definition)
The speed of light in vacuum has the same value in all inertial frames, regardless of the velocity of the observer or the velocity of the source emitting the light.