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1 Timeline 2 Geocentric model
1 Timeline 2 Geocentric model

... • Ptolemy invented the device called the eccentric • The eccentric is the center of the deferent • Sometimes the eccentric was slightly off center from the center of the Earth Ptolemy’s Geocentric Model • Uniform circular motion could not account for speed of the planets thus Ptolemy used a device c ...
Pitt County Schools
Pitt County Schools

... that distinguishes one type of em radiation from another. 1.03 Analyze the electromagnetic radiation given off by a heated object (blackbody) in terms of the graph of intensity (brightness) vs. wavelength for various temperatures and describe their similarities and differences.  Analyze Wien’s law ...
Cosmology
Cosmology

... Describe the fate of large stars to red-super giant, supernova and black holes or neutron stars. Describe the Schwarzschild radius and event horizon of a black hole. Problem sheet for homework. Comets, Meteorites and Binary stars Describe and explain the term comet. Give the structure of a comet and ...
Section 1
Section 1

... The spectrum is a particularly powerful tool in this endeavour, because, as already noted, the continuum and line spectra depend principally on the gravity, temperature, and composition (as well as rotation, magnetic field, mass loss, maculation, and other properties). The line spectra are used to c ...
Survey of the Solar System - USU Department of Physics
Survey of the Solar System - USU Department of Physics

... Astrometric Stellar Wobble: observed position actually changes periodically ...
Lecture 3 - Night Sky and Motion of the Earth around the Sun
Lecture 3 - Night Sky and Motion of the Earth around the Sun

File - Earth and Environmental Science and Biology
File - Earth and Environmental Science and Biology

... some of the sun's energy that reaches the earth. Much more sunshine is absorbed to heat the earth at the equator. This means the land at the equator becomes hotter than the poles. If we had no atmosphere or oceans, the equator would become too hot for life as we know it, and the poles too cold. Howe ...
Astronomy 104: Stellar Astronomy
Astronomy 104: Stellar Astronomy

PART A: MULTIPLE CHOICE (40 MARKS: 40 Minutes)
PART A: MULTIPLE CHOICE (40 MARKS: 40 Minutes)

... 13. A method used to charge an object without actually touching the object to any other charged object 14. A flow of electric charge 15. It occurs when the Moon passes between the Earth and the Sun blocking our view of the Sun. 16. Charging by contact 17. A process by which there is a net accumulati ...
AST1001.ch3
AST1001.ch3

... • Tycho thought he had measured stellar distances, so lack of parallax seemed to rule out an orbiting Earth. • Galileo showed stars must be much farther than Tycho thought—in part by using his telescope to see that the Milky Way is countless individual stars.  If stars were much farther away, then ...
Stargazer - Everett Astronomical Society
Stargazer - Everett Astronomical Society

... around distant stars. Unfortunately, the limitations of current technology mean that only giant planets (like Jupiter) have so far been detected, and smaller, rocky planets similar to Earth remain out of sight. How many of the known exoplanetary systems might contain habitable Earth-type planets? Pe ...
12.4 Evolution of Stars More Massive than the Sun
12.4 Evolution of Stars More Massive than the Sun

... It can be seen from this H-R diagram that stars more massive than the Sun follow very different paths when leaving the Main Sequence: ...
Midterm review key
Midterm review key

the candidate teachers` perception about basic astronomy concepts
the candidate teachers` perception about basic astronomy concepts

Lars Bildsten - nnpss
Lars Bildsten - nnpss

Formation of Stars
Formation of Stars

... Gravity works to compress a cloud. As an interstellar cloud collapses, it heats up. The rise in internal temperature and pressure works to counter gravity and stop the compression. ...
Review 3 - Physics and Astronomy
Review 3 - Physics and Astronomy

... 2. Detecting parallaxes means that Earth orbits around Sun 3. Maximum parallactic shift (two positions of the Earth’s orbit 6 months apart) ...
Chapter 15 Notes - Valdosta State University
Chapter 15 Notes - Valdosta State University

... and radio signals to determine locations on the surface of the Earth in terms of latitude and longitude. There are 24 of these solar powered satellites. At any time or place on the Earth’s surface, at least 4 of these satellites are in range of a GPS locating device. The device uses a type of triang ...
Riding Big Waves
Riding Big Waves

Origin of the Elements Essay
Origin of the Elements Essay

... Currently, the most popular theory states that the nuclei of hydrogen and helium, the lightest and most abundant elements in the visible universe, were created in the moments following the Big Bang. All other naturally occurring elements were — and continue to be — generated in the high temperature ...
News Analysis - Learning Space
News Analysis - Learning Space

... It simplified large number of physical theories It is not rigid, it is flexible. It can be distorted and warped as large masses move through it. ...
Simple Winter Star - Dark Sky Discovery
Simple Winter Star - Dark Sky Discovery

... charts here are far simpler and have fewer stars. You can just hold these up in front of you when you’re facing the appropriate direction and look up! Looking North The plough is perhaps the most easily recognised group of stars in the northern sky and it is a very useful ‘skymark’. The plough is al ...
Presentation
Presentation

A new Cosmos – a novel Physics
A new Cosmos – a novel Physics

... in the Arabian culture and Europe for calculating astronomical events, until it was finally replaced by Copernican astronomy. Although Ptolemaic astronomy within a geocentric cosmos allowed a respectably good calculation of future astronomical events and the duration of seasons and the year, over th ...
PHY320 Glossary of Terms - The University of Sheffield
PHY320 Glossary of Terms - The University of Sheffield

... are the particles which impinge on the top of the Earth's atmosphere. They are one of the sources of information about the relative abundances of elements in the Universe. Although they are predominantly protons, their elemental composition does exhibit differences with respect to the so-called "uni ...
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Theoretical astronomy

Theoretical astronomy is the use of the analytical models of physics and chemistry to describe astronomical objects and astronomical phenomena.Ptolemy's Almagest, although a brilliant treatise on theoretical astronomy combined with a practical handbook for computation, nevertheless includes many compromises to reconcile discordant observations. Theoretical astronomy is usually assumed to have begun with Johannes Kepler (1571–1630), and Kepler's laws. It is co-equal with observation. The general history of astronomy deals with the history of the descriptive and theoretical astronomy of the Solar System, from the late sixteenth century to the end of the nineteenth century. The major categories of works on the history of modern astronomy include general histories, national and institutional histories, instrumentation, descriptive astronomy, theoretical astronomy, positional astronomy, and astrophysics. Astronomy was early to adopt computational techniques to model stellar and galactic formation and celestial mechanics. From the point of view of theoretical astronomy, not only must the mathematical expression be reasonably accurate but it should preferably exist in a form which is amenable to further mathematical analysis when used in specific problems. Most of theoretical astronomy uses Newtonian theory of gravitation, considering that the effects of general relativity are weak for most celestial objects. The obvious fact is that theoretical astronomy cannot (and does not try) to predict the position, size and temperature of every star in the heavens. Theoretical astronomy by and large has concentrated upon analyzing the apparently complex but periodic motions of celestial objects.
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