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From reading this article, you will learn: The underlying reasoning behind what general relativity is all about; why we use tensors, how and why gravity has something to do with spacetime curvature as well as what the actual equations of general relativity really tell us in an intuitive sense.
This document provides an introduction to special relativity. It discusses how special relativity was developed by Einstein in 1905 to explain experimental issues involving light and electromagnetism.
1 Introduction. General relativity, and its application to cosmological models such as in ation, is a remark-ably beautiful and elegant theory. Yet newcomers to the eld often face at least three types of challenges: conceptual, mathematical, and notational.
My goal is to give you a complete step-by-step guide to learn both the special and general theories of relativity without you having to do extensive research on which books to get and where to start.
The special theory of relativity for dummies. If an object moves in relation to a (non-accelerating) observer, Einstein has taught us that the time of the object t’ differs from the time t of the observer, and in such a way that t'=t√ 1− v2 c2 Einstein deduced this by saying that the speed of light is the same for everyone and everything.
The diagrams guide the reader, step-by-step, from the basics of relativity to advanced topics including the addition of velocities, Lorentz contraction, time dilation, twin paradox, Doppler shift, and Einstein’s famous equation E = mc2.
