Ch-13 Relativity revolutionizes our understanding of space, time, and gravity by introducing Einstein's groundbreaking theories. The chapter begins with Galilean relativity and its limitations in explaining electromagnetic phenomena, setting the stage for Einstein's Special Theory of Relativity
(1905) with two postulates i.e Principle of Relativity and Constancy of Light Speed. This chapter transcends classical mechanics, reshaping our cosmic perspective and enabling technologies. The chapter also explores the profound mass-energy equivalence expressed by E=mc². Furthermore, it often provides an introduction to general relativity, explaining gravity as the curvature of spacetime caused by mass and energy, and its implications for phenomena like black holes and the expansion of the universe.Ch-13: Relativity - Short Question Answers
The core of relativity lies in the realization that space and time are not absolute but are relative to the observer's motion. Special relativity reveals the interconnectedness of space and time into a four-dimensional spacetime continuum and introduces the constant speed of light as a fundamental limit. The mass-energy equivalence (E=mc²) demonstrates the interchangeability of mass and energy. General relativity further transforms our understanding of gravity, describing it as the geometric warping of spacetime by mass and energy, which dictates how objects move. These concepts fundamentally alter our perception of the cosmos and have profound implications for physics and astronomy.
relativity, special relativity, general relativity, Einstein, time dilation, length contraction, simultaneity, mass-energy equivalence, E=mc², spacetime, gravity, speed of light, universe.
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