Class Note for TRAD 104 at UA
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This 1 page Class Notes was uploaded by an elite notetaker on Friday February 6, 2015. The Class Notes belongs to a course at University of Arizona taught by a professor in Fall. Since its upload, it has received 21 views.
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Date Created: 02/06/15
TRAD 104 Fall 2005 Discussion Section Science amp Inquiry TA Will Braynen September 2 2005 wbraynenemailarizonaedu From Class Lecture AXiomatized geometry Theory of vision each object puts out little quotreplicasquot of itself and our eyes receive those Observation is important but experiments are a waste of time because it reveals only forced not natural motion Invented a formal system of deductive logic quotDark agesquot quotScholasticismquot 7 a synthesis of Christianity with Ptolemy and Aristotle Everything is like biology There are ve elements earth air re water and aether and each has a natural motion Was hired by the Church to devise a better calendar so xmas doesn t shift into spring Suggesting that the idea that the sun is in the middle is only a computational convenience an instrument to be used for predictive purposes He was not a Copernican However he made the rst systematic astronomical observations and developed accurate techiques 1905 We all know that speed is relative to who is measuring it Einstein managed to convince everyone that distance and time are also relative to the observer the one making the measurement Earth is at the center of the universe Discovered that he could simplify the mathematics in an important way by putting the sun at the center with the earth moving around it He came to believe that that was actually the case He kept quiet Early 1600s strongly supports the literal truth of the Copernican picture uses a telescope to make astronomical observations and develops the beginnings of a physical theory that is compatible with Copernicus 1880 Devised a new system of formal logic one that is powerful enough to capture all the deductive reasoning used by mathematicians and powerful enough that many people think it is powerful enough to capture all the deductive reasoning used by scientists Gave a simple set of laws that account for Galileo s laws of how things move on the surface of the earth and Kepler s laws of how things move in the sky Burned at the stake in 1600 for heresy in part for proposing that there could be other inhabited worlds The speed of light is constant Orbits are ellipses speed depends on distance from the sun phenomenal accuracy Invented graph paper Advocated MECHANISMeverything is like clockwork Worked out pretty much the modern theory of vision light bounces off of things is focused by a lense on the back ofyour eye Discovered that the function of the heart is to pump blood around the body Before it was quotthe seat of the emotionsquot Devises a physical theory so that for the rst time there is a single set of laws for the earth and the heavens Space itself is curved and that means that light doesn t travel in straight lines
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