Ptolemy to Copernicus
Ptolemy to Copernicus Astr 1010-100
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This 2 page One Day of Notes was uploaded by Alyssa Karounos on Sunday January 18, 2015. The One Day of Notes belongs to Astr 1010-100 at University of Washington taught by Dr. Oliver Fraser in Winter2015. Since its upload, it has received 172 views. For similar materials see Introductory Astronomy 1 in Astronomy at University of Washington.
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Date Created: 01/18/15
11415 11 III IV VI Goals A Resrube the position and motions of planets in Ptolemy s Almagest If the new moon is just setting when will it be at zenith A noon B moonset and sunset happen at the same time in this case but moonsets end to happen at different iems compared to sunsets Hipparchus 190120 BCE A Mathematician and astronomer B discovered the processes of equinoxes now the processes of the Earth Processes of Equinoxes A Equinox equal length of day and night B the line of the sun s rays can create an imaginary line in the sky which will move over time C First comprehensive star catalog rated stars on a siX point scale of brightness D star magnitudes based on brightness Claudius Ptolemaeus 90168 CE A astronomer geographer mathematician etc Ptolemy39s Almagest A model of universe based on 800 years of observations B had tabes form predictor events C challenge match up all the daily and seasonal patterns 1 model the wanderers the planets 2 make motions in the heavens re ect certain perfect perceptions contest motions contest speeds 3 they could not see a change after siX months without a telescope and had trouble believing the Earth moved D They thought the sun moved on its own circle around the orbit of the Earth to make sure to account for the sun s change in speed VII E F G wanted to make sure everything was done in perfect circles planets traveled in two ways 1 Mars Jupiter and Saturn traveled around the entire celestial space over the span of 30 years 2 Mercury and venus travel back and forth with respect to the sun a each in less than a year Nicolaus Copernicus 1473 1543 A B 00 Ptolemy s model was more accurate but Copemicus s had the sun in the middle Not popular because politically he dislogiced the Earth in the middle and discredited catholic and protestant work Earth also ahs to go around the sun and spin and that was not possible We are moving 900 miles per hour in Seattle on Earth because of our rotation and 1037 miles per hour on the equator Our orbital speed around the sun is 66000 miles per hour Seen as impossible But we learned that nothing causes the atmosphere to slow down Coriolis force if traveling north or south in a straight line from the equator you will curve
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