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What is the main difference between the Ptolemaic system and the Copernican system?
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∙ 14y ago
The Ptolemaic system belived that the earth was the center of everything and all the planet and sun traveled around it and the copernican system belived that the sun was the center of everything and the planets and traveled around the sun.
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∙ 14y ago
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What showed Ptolemy's model for the universe was incomplete?
The geocentric system of Ptolemy said that all the planets stay in their prescribed spheres. By that was meant that each planet has its own shell (a hollow sphere) that it stays inside. The sphere of Mercury is closest to the Earth, then Venus and then the Sun. Galileo discovered the phases of Venus with his telescope. Now it's quite OK for Venus to have a crescent phase in the Ptolemaic system, because it can travel between the Earth and the Sun. But Galileo also saw that Venus had a gibbous phase at certain times, which the Ptolemaic system fails to account for. Galileo said this was a serious fault with the Ptolemaic system (correct) but he then claimed incorrectly that this must prove that the Copernican system - with the Sun at the centre - is correct. Galileo was wrong about that because Tycho Brahe came up with an alternative model that had Mercury and Venus orbiting the Sun, but then the Sun and the other planets still orbited round the Earth. This was a geocentric system that correctly described all the phases of Venus. But after the work of Kepler and Newton it was eventually agreed generally that the Sun has to be at the centre.
Which planets' motions were described with epicycles in the Ptolemaic system?
All the known planets
Who created the ptolemaic system?
It was Ptolemy, an ancient Greek scientist, who gave his name to the theory.
How did Galileos observation of Jupiter and venus support Copernicus' model?
Galileo's discoveries with the telescope sowed doubts about the ancient Ptolemaic model which had the Earth at the centre. First, Jupiter's moons orbited round Jupiter and not the Earth, the first objects that had been discovered that were not orbiting the Earth. Secondly the discovery of the phases of Venus raised doubt about the Ptolemaic model, particularly the gibbous phase when, we now know, Venus is round behind the Sun as seen from Earth. In the Ptolemaic model Venus never goes behindthe Sun (as seen from Earth) and the gibbous phase cannot happen.By implying in the title of his book 'Dialogue of the two world systems' that there were only two models in contention, those of Ptolemy and Copernicus, Galielo insinuated that if the Ptolemaic model was incorrect the Copernican system must be correct. This was logically flawed because at the time there were two other systems in the public domain that both explained Venus's phases. These were the models of Tycho, which was geocentric, and finally Kepler's which was heliocentric.Of these four, Kepler's was eventually accepted by everyone after Newton's theoretical discoveries showed that Kepler's elliptical orbits for the planets agreed with the new theory of dynamics.
It took two centuries for the Copernican model to replaced the Ptolemaic model because?
The short answer: when people's world views are challenged in such a manner that contradicts a previously affirmed belief system, they have difficulty accepting the significant change. There was much resistance to the idea of the sun being the centre of the universe as opposed to the earth. [Insert a great deal of study of Western History, Science and Religion here]
Compare Copernican scheme and Ptolemaic system?
In Copernican scheme, the sun is the center of the solar system, while in the Ptolemaic system, the earth is the center of the universe and all the bodies of the universe revolve around it :) -iloveu armstrong11-12 Munsci :)
Copernican system who supported this belief and who did not?
Galileo supported the Copernican system, but Aristotle did not. The Copernican system was a belief that the sun was the center of the solar system.
What is the difference between the Heliocentric theory and the Copernican theory?
The heliocentric 'theory' is not really a theory at all, more an assertion that the Sun is at the centre of the solar system. Copernicus's theory assumes that the Sun is at the centre and provides a model of the planets' orbits that uses circles and epicycles to explain the observed orbits. He said it was simpler than the old "geocentric" (Earth centred) Ptolemaic system, but it was not really, it actually had more epicycles. Note: Perhaps the questioner got mixed up. The Copernican theory IS a heliocentric theory. Perhaps the question is about the geocentric theory and the Copernican theory. Anyway, Kepler simplified the heliocentric theory and now we know that his model is correct.
How does the Ptolemaic model differ from the modern day model?
The Ptolemaic model has all of the planets moons and stars moving around the Sun. The modern day Copernican model has all the planets moving around the Sun, with the moons moving around the planets, and the Sun and its "system" moving around the Milky Way.
Did Tycho believe in the Copernican model of heliocentrism?
No, Tycho believed the Earth was at the centre, and he produced an alternative geocentric model that fully explained Venus's phases, which the old Ptolemaic system failed to do.This spoilt Galileo's argument that the Copernican system must be correct and the Sun must be at the centre. However the modern view is that the Sun is at the centre, for reasons that Galileo was not aware of in his lifetime.
How do the phases of Venus's help?
Galileo was able to observe Venus going through a full set of phases, something prohibited by the Ptolemaic system (which would never allow Venus to be fully lit from the perspective of the Earth or more than semi-circular). This observation essentially ruled out the Ptolemaic system, and was compatible only with the Copernican system and the Tychonic system and other geoheliocentric models such as the Capellan and Riccioli's extended Capellan model.
Tycho's universe was the same as the Copernican universe except that?
Brahe's theories revolved around the ptolemaic system, where Earth was the centre of the Universe. Copernicus stated that the Earth is not the center of the Universe, but we revolve around other masses as well.
What is sun centerd model of solar system?
The Sun-centered or heliocentric model of the solar system is called the Copernican model (after Copernicus) and more closely matches the modern astronomical notions. By contrast, the geocentric or Earth-centric model is often called the Ptolemaic.
Who supported the Copernican system?
the pope
He said that the sun is the center of the solar system?
Although there were several thinkers which proposed something like the heliocentric model before him, Copernicus is identified most with the idea; and it took his name, the Copernican system, contrasting with the geocentric model that identified Earth as the center, known as the Ptolemaic model.
Was Copernican in the heliocentric or geocentric system?
The proposed the heliocentric system.
Who didn't support the Copernican system?
the pope
