Lecture 1-4 notes for physics
Lecture 1-4 notes for physics PHYS1750
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This 2 page Bundle was uploaded by Legacy Tanner on Saturday August 29, 2015. The Bundle belongs to PHYS1750 at University of Toledo taught by Anderson,L in Fall 2015. Since its upload, it has received 52 views. For similar materials see Introduction to Physics in Natural Sciences and Mathematics at University of Toledo.
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Date Created: 08/29/15
Physics Lecture 1 Physics 0 A human endeavor to determine the character of nature 0 We study physics to manipulate nature and satisfy curiosity by using models of reality that are always subject to change 0 Laws relationship between observable phenomena examples Newton39s Laws law of radioactive decay Theories mathematical explanations of phenomena examples general relativity special relativity Scienti c Method involves 0 Reduction isolation of cause and effect by environment ruling stuff out about whether or not it is the cause of something 0 Deduction logical inference inferring a relationship between something happening and why Example what is core of earth made of Can be deduced from common materials in the solar system and mean density 0 Classical quotscientific methodquot is about telling not doing 0 Steps of scienti c paper lntro Data collection Resu s Analysis of results Conclusion 0 150000 km distance of earth from sun 0 On a rock circling the sun 0 Sun is 1 of 200 billion stars in the milky way 0 Milky way galaxy is 1 of dozens of galaxies in Local Group 0 Local Group belongs to Virgo super cluster of 2500 large galaxies and many small ones 0 Millions of super clusters Cosmological Principle universe is homogenous and isotropic The universe is aging 0 Big bang happened 137 billion years ago 0 As it ages hydrogen and helium are converted to heavier elements in the cores of stars These elements get redistributed into later generations of stars planets and people
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