Plato - Plato's Homework Problem A slight digression...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Plato's Homework Problem A slight digression: Another conclusion drawn from Aristotle's teachings was that the Earth was unique with its own set of physical laws that were different from how things worked in the heavens. The Earth was a world and filled with change and decay while the planets, Moon, and Sun were perfect, unchanging and essentially ornaments on the sky, not worlds that could be explored. (Imagine the transformation of our viewpoint when we discovered using telescopes that those wandering points of light are worlds like the Earth and then later discovered other planets orbiting other stars!) Now, to return to the motions of the planets. .. Astronomers continued working on models of how the planets moved. In order to explain the retrograde motion some models used epicycles ---small circles attached to larger circles centered on the Earth. The planet was on the epicycle so it executed a smaller circular motion as it moved around the Earth. This meant that the planet's distance from us changed and if the epicyclic
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 12/15/2011 for the course AST AST1002 taught by Professor Emilyhoward during the Fall '10 term at Broward College.

Page1 / 2

Plato - Plato's Homework Problem A slight digression...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online