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Discuss the three models of spacetime. Aristotelian spacetime. Galilean spacetime. Einstein’s spacetime. “ The test of a first-rate intelligence is the ability to hold two opposing ideas in mind at the same time and still retain the ability to function. ” —F. Scott Fitzgerald.
In this guest lecture, he describes how the most accomplished physicists of the mid-to-late 19 th century were thinking about motion of bodies through space and time, and how, at the end of that century, a rather young and very little-known person named Albert Einstein began asking similar questions but often in very different ways. (01:13:40)
In three dimensions, the distance from (x;y;z) to (x+ x;y+ y;z+ z) is given by s2 = x2 + y2 + z2. In spacetime, it turns out to be extremely useful to regard s 2= 2c 2 t + x + y + 2z as expressing an invariant notion of \distance squared" between two events. Students usually want to know \Why does the c2 t2 have a minus sign?" The best answer I ...
Description: Introduction to spacetime diagrams. (08:00) Instructor: Prof. Markus Klute. Transcript. Download video. Download transcript. MIT OpenCourseWare is a web based publication of virtually all MIT course content. OCW is open and available to the world and is a permanent MIT activity.
a geometric spacetime approach, where the di erences between Newtonian physics and relativity are encoded into the geometry of how space and time are modeled. I believe that understanding the di erences in the underlying geometries gives a
•Newtonian spacetime has enough structure to support the Principle of Inertia. • But : Newtonian spacetime also supports Leibiz's Kinematic Shift! •In Newtonian spacetime, the unshifted and shifted worlds are distinct!
1.1: Three Models of Spacetime Time and space together make spacetime, the stage on which physics is played out. Until 1905, physicists were trained to accept two mutually contradictory theories of spacetime.
