Lecture 4 - Physics and Astronomy
... They invented a complex system of deferents and epicycles, each of which is a “perfect circle,” to describe retrograde motion. ...
... They invented a complex system of deferents and epicycles, each of which is a “perfect circle,” to describe retrograde motion. ...
History of astronomy - Part I.
... The Greeks had a notion that because the planets were located in the heavens, their motions must be “perfect”. Uniform, circular motion was regarded as perfect. So the planets must move through space uniformly on circles. But – the planets do not move uniformly to the east against the stars. Theref ...
... The Greeks had a notion that because the planets were located in the heavens, their motions must be “perfect”. Uniform, circular motion was regarded as perfect. So the planets must move through space uniformly on circles. But – the planets do not move uniformly to the east against the stars. Theref ...
ppt document - FacStaff Home Page for CBU
... spinning since there is no great wind outside, so Earth must be stationary, so other things must be revolving around the earth (geocentric model). ** Alexander the Great lived during this time Eratosthenes: ~250 BC; used geometry and observations to determine the circumference of the spherical earth ...
... spinning since there is no great wind outside, so Earth must be stationary, so other things must be revolving around the earth (geocentric model). ** Alexander the Great lived during this time Eratosthenes: ~250 BC; used geometry and observations to determine the circumference of the spherical earth ...
powerpoint - Physics @ IUPUI
... the earth remained fixed, so sun must orbit around the earth. • Few took his model seriously. • Most important contribution may have been the hiring of Kepler in 1600. • On death bed, begged his apprentice (who he did not get along with) to find a model which based on the observations would make sen ...
... the earth remained fixed, so sun must orbit around the earth. • Few took his model seriously. • Most important contribution may have been the hiring of Kepler in 1600. • On death bed, begged his apprentice (who he did not get along with) to find a model which based on the observations would make sen ...
Astronomy 110 Announcements:
... How did Galileo solidify the Copernican revolution? Galileo (1564-1642) overcame major objections to Copernican view. Three key objections rooted in Aristotelian ...
... How did Galileo solidify the Copernican revolution? Galileo (1564-1642) overcame major objections to Copernican view. Three key objections rooted in Aristotelian ...
A Short History of the Origin of Modern Astronomy What is a “Theory
... 1. All celestial objects revolve around the Sun and the Sun is at the center of the cosmos. 2. The distance from the Earth to the stars is much greater than the distance of the Earth to the Sun. 3. The daily motion of the heavenly bodies relative to the horizon is due to the Earth's rotation on its ...
... 1. All celestial objects revolve around the Sun and the Sun is at the center of the cosmos. 2. The distance from the Earth to the stars is much greater than the distance of the Earth to the Sun. 3. The daily motion of the heavenly bodies relative to the horizon is due to the Earth's rotation on its ...
123mt13a
... Two identical masses are separated by distance D: At a distance of 3D the gravitational force will be A The same; gravity only depends on Mass B Smaller by a factor of 3 C Smaller by a factor of 6 D E ...
... Two identical masses are separated by distance D: At a distance of 3D the gravitational force will be A The same; gravity only depends on Mass B Smaller by a factor of 3 C Smaller by a factor of 6 D E ...
Introductory Astrophysics
... • Is there something simpler? • How about Aristarchus' ideas: – Earth centered (heliocentric) – Earth rotates – Earth is no different from the other planets and stars! ...
... • Is there something simpler? • How about Aristarchus' ideas: – Earth centered (heliocentric) – Earth rotates – Earth is no different from the other planets and stars! ...
Lecture 3 Ptolemy to Galileo
... ● inclination of Moon's orbit ● place of Sun's “apogee” ● eccentricity of the “Sun's orbit” ● estimate of the Moon's distance, using the diameter of the Earth as a baseline ● He put astronomy on a geometrical basis. ...
... ● inclination of Moon's orbit ● place of Sun's “apogee” ● eccentricity of the “Sun's orbit” ● estimate of the Moon's distance, using the diameter of the Earth as a baseline ● He put astronomy on a geometrical basis. ...
history of astro outline 2014
... Claudius Ptolemy proposes an Earth-centered (geocentric) model of the universe in his work called Almagest. His work supported Aristotle’s geocentric view of the universe. To address the problem of retrograde motion of Mars, Jupiter and Saturn, Ptolemy used a complex system of epicycles. As the plan ...
... Claudius Ptolemy proposes an Earth-centered (geocentric) model of the universe in his work called Almagest. His work supported Aristotle’s geocentric view of the universe. To address the problem of retrograde motion of Mars, Jupiter and Saturn, Ptolemy used a complex system of epicycles. As the plan ...
History of astronomy - Part I.
... The Greeks had a notion that because the planets were located in the heavens, their motions must be “perfect”. Uniform, circular motion was regarded as perfect. So the planets must move through space uniformly on circles. But – the planets do not move uniformly to the east against the stars. Theref ...
... The Greeks had a notion that because the planets were located in the heavens, their motions must be “perfect”. Uniform, circular motion was regarded as perfect. So the planets must move through space uniformly on circles. But – the planets do not move uniformly to the east against the stars. Theref ...
And let there be light!
... Astronomy – The study of the universe beyond the earth’s atmosphere. Solar System – the Sun and all the objects that travel around it due to gravitational force. Objects = planets, over 60 satellites (moons) orbiting the planets, thousands of asteroids, countless meteoroids and comets, and ...
... Astronomy – The study of the universe beyond the earth’s atmosphere. Solar System – the Sun and all the objects that travel around it due to gravitational force. Objects = planets, over 60 satellites (moons) orbiting the planets, thousands of asteroids, countless meteoroids and comets, and ...
HW1-6
... RQ 4: Why did Copernicus have to keep small epicycles in his model? Copernicus was still committed to uniform circular motion. The real motion of planets are elliptical, but he used a combination of a circle on a circle to try to create an ellipse. RQ 5: When Tycho observed the new star of 1572, he ...
... RQ 4: Why did Copernicus have to keep small epicycles in his model? Copernicus was still committed to uniform circular motion. The real motion of planets are elliptical, but he used a combination of a circle on a circle to try to create an ellipse. RQ 5: When Tycho observed the new star of 1572, he ...
The Waltz of the Planets and Gravity
... A planet’s synodic period is measured with respect to the Earth and the Sun (for example, from one opposition to the next) ...
... A planet’s synodic period is measured with respect to the Earth and the Sun (for example, from one opposition to the next) ...
Physics Section 7.3 Apply Kepler*s Laws of Planetary
... Apply Kepler’s Laws of Planetary Motion The Polish astronomer Nicolas Copernicus was the first to correctly place the sun at the center of our solar system. ...
... Apply Kepler’s Laws of Planetary Motion The Polish astronomer Nicolas Copernicus was the first to correctly place the sun at the center of our solar system. ...
Understanding Planetary Motion
... move and that in order to change the motion of an object some violent outside cause was required. – For example – He would observe a tree that remained at rest for years – the tree was at rest because it didn’t want to move. A strong storm however, was a violent cause that could make the tree move ( ...
... move and that in order to change the motion of an object some violent outside cause was required. – For example – He would observe a tree that remained at rest for years – the tree was at rest because it didn’t want to move. A strong storm however, was a violent cause that could make the tree move ( ...
Astronomy 1010 - The University of Toledo
... • Patterns of stars seen in the sky • There are 88 constellations • About 50 of them were named by ancient Greeks and Romans ...
... • Patterns of stars seen in the sky • There are 88 constellations • About 50 of them were named by ancient Greeks and Romans ...
PHYSICS DEPARTMENT Syllabus: Phys 200 (3 cr
... Stellar Evolution and the Death of Stars Birth of stars. Evolution from the main-sequence to Red Giants. Testing stellar evolution using observed star clusters. Evolution to white Dwarfs, Neutron Stars or Black Holes. ...
... Stellar Evolution and the Death of Stars Birth of stars. Evolution from the main-sequence to Red Giants. Testing stellar evolution using observed star clusters. Evolution to white Dwarfs, Neutron Stars or Black Holes. ...
Introduction to the EarthESci 100Dr. Albanese, Tuesdays and
... 12. Galileo built the first known telescope. 13. Although current technology will allow the construction of much larger optical telescopes, astronomers see no advantage in building these larger instruments. 14. The large size of some of the volcanoes on Mars is due to an earlier period of plate tect ...
... 12. Galileo built the first known telescope. 13. Although current technology will allow the construction of much larger optical telescopes, astronomers see no advantage in building these larger instruments. 14. The large size of some of the volcanoes on Mars is due to an earlier period of plate tect ...
Copernican heliocentrism
Copernican heliocentrism is the name given to the astronomical model developed by Nicolaus Copernicus and published in 1543. It positioned the Sun near the center of the Universe, motionless, with Earth and the other planets rotating around it in circular paths modified by epicycles and at uniform speeds. The Copernican model departed from the Ptolemaic system that prevailed in Western culture for centuries, placing Earth at the center of the Universe, and is often regarded as the launching point to modern astronomy and the Scientific Revolution.Copernicus was aware that the ancient Greek Aristarchus had already proposed a heliocentric theory, and cited him as a proponent of it in a reference that was deleted before publication, but there is no evidence that Copernicus had knowledge of, or access to, the specific details of Aristarchus' theory. Although he had circulated an outline of his own heliocentric theory to colleagues sometime before 1514, he did not decide to publish it until he was urged to do so late in his life by his pupil Rheticus. Copernicus's challenge was to present a practical alternative to the Ptolemaic model by more elegantly and accurately determining the length of a solar year while preserving the metaphysical implications of a mathematically ordered cosmos. Thus his heliocentric model retained several of the Ptolemaic elements causing the inaccuracies, such as the planets' circular orbits, epicycles, and uniform speeds, while at the same time re-introducing such innovations as,Earth is one of several planets revolving around a stationary Sun in a determined orderEarth has three motions: daily rotation, annual revolution, and annual tilting of its axisRetrograde motion of the planets is explained by Earth's motionDistance from Earth to the Sun is small compared to the distance to the stars.↑ 1.0 1.1 ↑