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ORIGINS 2B03 Lecture Notes - Lecture 9: Special Relativity

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turquoiseant391
9 Feb 2012
School
McMaster University
Department
Origins
Course
ORIGINS 2B03
Professor
Laura Parker

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Document Summary

The effect is very small for everyday speeds. Clocks moving relative to one another at 100 km/h differ by about 1 second every 3 million years! Even weirder: there is no way to tell which observer was the one who was moving! A thinks a is not moving and b is moving to the right. B thinks b is not moving and a is moving to the left. Both observers thinks it is the other observer"s time that is slowing down! Consistency is related to the "relativity of simultaneity": moving observers can disagree on the ordering of some events in time. Measurements are "relative" - depend on the speed on the observer! Gps (needs very precise idea of time work out distances) Masses get larger as you approach the speed of light. Associated with all mass there is an energy e. E represents the energy that is associated with any mass m. Derived from the assumption about speed of light.

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