25.1 Introduction to the Special Theory of Relativity | General Physics

Chad provides an Introduction to Einstein's Special Theory of Relativity. The lesson begins with the two postulates of the Special Theory of Relativity. The first postulate states that the laws of physics are the same in all inertial frames. An inertial frame is a frame in which Newton's 1st Law of Motion applies meaning there is no net force or acceleration acting upon an object. The second postulate states that the speed of light in a vacuum is constant in all inertial frames regardless of the relative speed at which the observer and source of light might be moving. The consequences of the speed of light being constant in all inertial frames is that the measurement of time and distance become dependent upon the inertial frame of the observer, particularly when objects are moving at high speeds relative to the speed of light.
00:00 Lesson Introduction
01:57 Two Postulates of Special Relativity
03:16 Review of Classical Relative Motion
10:40 Relativistic Consequences of a Constant Speed of Light
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[@helifynoe9930]

You can always take the easy route to understand special relativity. Even if you are said to be the dumbest person in all your classes, and perhaps you have had a nasty head injury in the past to account for all this, and in turn you end up dropping out of school altogether, it is still an easy breezy task for you to discover the Special Relativity(SR) phenomena on your own, and at the same time come up with a brand new way of deriving the SR mathematical equations. However, if you are at the top of the class, it will be a whole lot more difficult, due to you being trained to have a one track way of thinking.

[@SPV66]

@ 3:00 , inertial not intertial

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