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Ptolemy
Ptolemy was an Egyptian mathematician and scientist. He lived from 90 to 168 AD.
412 Questions
What was the foundation of ptoelmy geocentric model of the universe?
Claudius Ptolemy, an Egyptian geographer, mathematician, and astronomer, is credited with the Ptolemaic Model of the solar system. His model posited not only that the Earth was the center of the entire universe and assumed that the planets all moved in epicycles--small circles--that also moved along even larger circles called deferents.
Please be more specific in regard to Ptolemy -- there were many. One was a mathematician/astronomer and the other was a general of Alexander the Great who founded the last pharonic dynasty in Egypt. There were 15 Ptolemies who followed him and many of them had a relationship with Rome.
Please be more specific in regard to Ptolemy -- there were many. One was a mathematician/astronomer and the other was a general of Alexander the Great who founded the last pharonic dynasty in Egypt. There were 15 Ptolemies who followed him and many of them had a relationship with Rome.
Please be more specific in regard to Ptolemy -- there were many. One was a mathematician/astronomer and the other was a general of Alexander the Great who founded the last pharonic dynasty in Egypt. There were 15 Ptolemies who followed him and many of them had a relationship with Rome.
Please be more specific in regard to Ptolemy -- there were many. One was a mathematician/astronomer and the other was a general of Alexander the Great who founded the last pharonic dynasty in Egypt. There were 15 Ptolemies who followed him and many of them had a relationship with Rome.
Please be more specific in regard to Ptolemy -- there were many. One was a mathematician/astronomer and the other was a general of Alexander the Great who founded the last pharonic dynasty in Egypt. There were 15 Ptolemies who followed him and many of them had a relationship with Rome.
Please be more specific in regard to Ptolemy -- there were many. One was a mathematician/astronomer and the other was a general of Alexander the Great who founded the last pharonic dynasty in Egypt. There were 15 Ptolemies who followed him and many of them had a relationship with Rome.
Please be more specific in regard to Ptolemy -- there were many. One was a mathematician/astronomer and the other was a general of Alexander the Great who founded the last pharonic dynasty in Egypt. There were 15 Ptolemies who followed him and many of them had a relationship with Rome.
Please be more specific in regard to Ptolemy -- there were many. One was a mathematician/astronomer and the other was a general of Alexander the Great who founded the last pharonic dynasty in Egypt. There were 15 Ptolemies who followed him and many of them had a relationship with Rome.
Please be more specific in regard to Ptolemy -- there were many. One was a mathematician/astronomer and the other was a general of Alexander the Great who founded the last pharonic dynasty in Egypt. There were 15 Ptolemies who followed him and many of them had a relationship with Rome.
How did Galileo prove ptolemy's theory of space wrong?
Copernicus produced his model with the Sun at the centre in 1543, and then in 1609 Kepler produced the model that we use now. Kepler's model also uses the idea of having the Sun at the centre. No-one proved anything but after Newton's discoveries in physics it was realised that Kepler's model fitted exactly with Newton's later theories in gravity and dynamics, so that's why it became accepted, and it still is.
What came first captain cooks maps Newfoundland or Ptolemy's world map?
Gerhard Kremer, also known as Geradus Mercator (it was fashionable to have a Latin nickname in the 16'th Century), produced his first map in 1537.
Ptolomy, who liked to call himself Claudius Ptolemaeus, did his thing in the 2'nd century - so, somewhere between 100 and 200 A.D.
Soooo... Ptolomy wins!! by 14 centuries !!!!
What Model of the universe do you use today?
The current model of the solar system is the "heliocentric system" meaning sun is the center of the solar system.
Hope this helps :)
What was ptolemy view on the solar system?
Ptolemy was an early Greek astronomer, and as most people believed, Ptolemy thought the solar system was geocentric. This meant that Earth was at the center, it was the most important thing, and that all celestial bodies circled it.
How did Copernicus disprove ptolemy's theory about universe?
Copernicus proposed a heliocentric model of the universe, with the Sun at the center and the planets orbiting around it, while Ptolemy's model placed the Earth at the center. By providing a simpler explanation for planetary motion and accurately predicting the positions of celestial bodies, Copernicus's model challenged the complexity of Ptolemy's geocentric theory and gained acceptance over time.
How was Ptolemy's model different from the earlier Greek model?
Ptolemy's model is different from the earlier Greek model because Ptolemy developed a compllex geocentric model of the universe and his model seemed to explain motions until the 1500s.The early Greek astronomers believed that Earth was the center of the universe.
How did Ptolemy explain planet motion?
Ancient astronmers used shell theory. The earth was center, then came the moon, planets and sun, then other stars. At first it was a circular system. It seemed more "perfect", that degenerated into ellipses as the mathematics didn't work out.
What did Galileo find in his scientific observations that convinced him that Ptolemy had been wrong?
When Galileo observed that there are satellites which orbit the planet Jupiter, this was clear evidence that not everything orbits the Earth.
Why did ptolemy believe that earth was center of the universe?
Because from our point of view, it looks like the Sun and Moon and stars rotate around the Earth when really they don't. From an observer's viewpoint, the Earth appears to be standing still.
It was not until the development of the modern tools of astronomy (mathematics, telescopes) that the movements of the Earth, rotation and revolution, were found to produce the observed motions in the sky.
Yes, this is true.
What was the foundation of ptolemys deocentric model the universe?
The geocentric model stated that Earth was the center of the universe, and all other bodies revolved around it.
Ptolemy thought that the rest of the universe spun in nested circles around the Earth, with the Sun and stars much closer than they actually are.
Why was the Egyptian art in tombs 2d and not 3d or frontal portraits?
Ancient Egyptian depictions of people were strictly governed by tradition and religion, as well as purely practical considerations.
The rule was that each individual part of the human figure must be shown from its most recognisable viewpoint, even if this meant showing the eye (for example) as if seen from the front, but the rest of the face is seen in profile (from the side). Look closely at ancient Egyptian paintings and you can see this is true. An eye seen from the side would have been more difficult to understand.
The same applies to shoulders - they make most sense when seen from the front, but the rest of the torso and legs are always shown from the side. This does not mean that ancient Egyptians walked around in a peculiar pose - they walked exactly like everyone else.
Frontal portraits are rare in Egyptian art, but they do exist. They are usually reserved for musicians, acrobats and other entertainers, who were not thought to have any status - so it didn't matter if they were shown differently.
Painting "three dimensionally" on a two-dimensional surface is all about shadow and highlights, light and shade, tonal modelling and understanding perspective. None of these things were known to Egyptian artists, who continued the same flat style of painting for thousands of years and never felt any need to change.
Caesarion was born in Egypt on June 23, 47 BC and died in Alexandria, Egypt in 30 BC. He was the son of Cleopatra, who claimed the father was Julius Caesar.
Who did Cleopatra have Ptolemy Philadelphos with?
The father of Ptolemy Philadelphos was Marc Antony.
The father of Ptolemy Philadelphos was Marc Antony.
The father of Ptolemy Philadelphos was Marc Antony.
The father of Ptolemy Philadelphos was Marc Antony.
The father of Ptolemy Philadelphos was Marc Antony.
The father of Ptolemy Philadelphos was Marc Antony.
The father of Ptolemy Philadelphos was Marc Antony.
The father of Ptolemy Philadelphos was Marc Antony.
The father of Ptolemy Philadelphos was Marc Antony.
What was the connection between Alexander the Great and hellenism?
Alexander the Great played a pivotal role in the spread of Hellenism, which refers to the cultural diffusion of Greek culture throughout the regions he conquered. His military campaigns established Greek cities and promoted the Greek language, art, and governance in areas stretching from Greece to Egypt and into parts of Asia. This blending of cultures led to a synthesis of Greek and local customs, ultimately shaping the Hellenistic period, characterized by advancements in arts, science, and philosophy. Alexander's legacy thus ensured that Hellenistic culture continued to flourish long after his death.
How did copernicuss view of the universe differ from ptolemys?
Copernicus proposed a heliocentric model of the universe, asserting that the Sun, not the Earth, was at the center, with the planets, including Earth, orbiting around it. In contrast, Ptolemy's geocentric model placed the Earth at the center, with the Sun, Moon, and stars revolving around it in complex circular orbits. This shift from a Earth-centered to a Sun-centered view marked a significant change in understanding the structure of the cosmos, laying groundwork for modern astronomy.
