The central idea of the Ptolemy section is that in ancient times, astronomy was based on a flawed theory. This theory stated that Earth was the center of the solar system and the sun and the other planets revolved around it. However, in this section, Ball also praises Ptolemy’s achievements from that era, which came from observations made without telescopes or other basic advances in technology that we take for granted today. Ball develops this section by discussing the limited technology and scientific understanding from Ptolemy’s time. He then discusses how Ptolemy used the belief systems of the time, such as circles being a symbol of perfection, that the world was round, and that the stars shifted across the sky. These beliefs allowed him to formulate his model of planetary motion, which claimed that the planets and sun circled Earth.
Answer:
The central idea of the Ptolemy selection is that the theory was based on the revolution of planets and the sun around the Earth. Ball develops this idea by discussing the limited technology and scientific understanding.
Explanation:
Ptolemy was an astronomer and mathematician, who proposed the central idea of planetary motions. the Ptolemy theory was flawed as it describes Earth as the center of the solar system and all the planets and sun revolving around it. due to lack of scientific advancements and research in the ancient era resulted in the flawed theory. ball in his section praises Ptolemy's theories, which were the observations made without telescopes and advanced technologies.
The ball then discusses the belief systems used by Ptolemy, such as circles symbolizing perfection, the theory of Round world, and shifting of the stars across the solar system. Thus, these beliefs provoked the Ptolemy to propose a theory of planetary motion describing movements of the planets and sun around the Earth.
Reference: https://brainly.com/question/14442534?referrer=searchResults
