Albert Instien - Einstein's Relativity: Space-Time And The Speed Of Light

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Published Nov 6, 2010

Science&Reason on Facebook: tinyurl.com Albert Einstein's Theory of Relativity (Chapter 3): Space-Time And The Speed Of Light The concept of spacetime combines space and time to a single abstract "space", for which a unified coordinate system is chosen. Typically three spatial dimensions (length, width, height), and one temporal dimension (time) are required. Dimensions are independent components of a coordinate grid needed to locate a point in a certain defined "space" --- Please subscribe to Science&Reason: • www.youtube.com • www.youtube.com • www.youtube.com • www.youtube.com --- SPACETIME In physics, spacetime (or space-time) is any mathematical model that combines space and time into a single continuum. Spacetime is usually interpreted with space being three-dimensional and time playing the role of a fourth dimension that is of a different sort from the spatial dimensions. According to certain Euclidean space perceptions, the universe has three dimensions of space and one dimension of time. By combining space and time into a single manifold, physicists have significantly simplified a large number of physical theories, as well as described in a more uniform way the workings of the universe at both the supergalactic and subatomic levels. In classical mechanics, the use of Euclidean space instead of spacetime is appropriate, as time is treated as universal and constant, being independent of the state of motion of an observer. In relativistic contexts, however, time...