[PHYS W2801] - Midterm Exam Guide - Comprehensive Notes for the exam (36 pages long!)
5 Oct 2016
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Introduction to mechanics accelerated physics 2801: newtonian mechanics, doesn"t include relativity, quantum mechanics, string theory, etc, modern perspective: newton"s laws are an effective theory i. ii. iii. Effective theories encapsulates the physics relevant to a particular class of phenomena in a particular energy range. Fundamental theory: accurate and correct for all phenomena. Newton"s theories only work for the big and slow, so it is not fundamental, but effective. Originally defined as 10-9th the distance from the north pole to the equator through paris i: movement to base dimensionful parameter on fundamental atomic properties iii. Currently, a meter is equal to the distance of length traveled by light in a vacuum during a time of seconds. However, this begs the question of what a second is iv: a second is the duration of 9,192,631,770 periods of radiation from a particular pair of hyperfine levels f. in atomic cesium 133.
