![Lecture 3](http://s1.studyres.com/store/data/008081992_1-91153d51854a1b13b5a6b1d3b6d2e218-300x300.png)
Lecture 3
... atmosphere. Temperature is just a measure of the average velocity of the atoms and molecules in a gas. For a relatively cool gas there are: (1) Few atomic collisions with enough energy to knock electrons up to the 1st excited state so the majority of the H atoms are in the ground state (2) Few oppor ...
... atmosphere. Temperature is just a measure of the average velocity of the atoms and molecules in a gas. For a relatively cool gas there are: (1) Few atomic collisions with enough energy to knock electrons up to the 1st excited state so the majority of the H atoms are in the ground state (2) Few oppor ...
How the Sun Shines - Department of Earth and Planetary Sciences
... The discovery of the radio-active elements, which in their disintegration liberate enormous amounts of energy, thus increases the possible limit of the duration of life on this planet, and allows the time claimed by the geologist and biologist for the process of evolution. The discovery of radioacti ...
... The discovery of the radio-active elements, which in their disintegration liberate enormous amounts of energy, thus increases the possible limit of the duration of life on this planet, and allows the time claimed by the geologist and biologist for the process of evolution. The discovery of radioacti ...
Dear Teachers - Jeffrey Bennett
... • (optional) You can use clay or a set of ball bearings to use as models for the planets. • You will need a ruler and tape measure. • You will need a calculator. Part A. We will look at our solar system on a scale of 1 to 10 billion, meaning that sizes and distances are all 1/10,000,000,000 of actua ...
... • (optional) You can use clay or a set of ball bearings to use as models for the planets. • You will need a ruler and tape measure. • You will need a calculator. Part A. We will look at our solar system on a scale of 1 to 10 billion, meaning that sizes and distances are all 1/10,000,000,000 of actua ...
Document
... • Surface Gravity – log g (although g is not a dimensionless number). Log g in stars range from 8 for a white dwarf to 0.1 for a supergiant. The sun has log g = 4.44 ...
... • Surface Gravity – log g (although g is not a dimensionless number). Log g in stars range from 8 for a white dwarf to 0.1 for a supergiant. The sun has log g = 4.44 ...
Earth-Sky Relationships and the Celestial Sphere
... dividing line on the sky the Celestial Equator, and it is represented on your celestial sphere as the “seam” between the bottom and top halves of the sphere. We know that the poles of the Earth are the points on the Earth that are the center of our daily rotation. Similarly, the Celestial poles are ...
... dividing line on the sky the Celestial Equator, and it is represented on your celestial sphere as the “seam” between the bottom and top halves of the sphere. We know that the poles of the Earth are the points on the Earth that are the center of our daily rotation. Similarly, the Celestial poles are ...
Pre-Service Teachers` Conceptions of Specific Astronomy Concepts
... reasons, unlike other studies in the literature, this study was planned to explore the current situation of pre-service teachers, to study the problems in the long term (4 years), to observe changes, to find out the differences between teaching programs (Science and Primary teaching), to present the ...
... reasons, unlike other studies in the literature, this study was planned to explore the current situation of pre-service teachers, to study the problems in the long term (4 years), to observe changes, to find out the differences between teaching programs (Science and Primary teaching), to present the ...
Notes
... Mass loss rate decreases but wind speed increases Hydrogen layer thins further from mass loss and He burning shell Star evolves at constant luminosity (~104LSun), shrinking and heating up, until nuclear burning ceases Masses between 0.55 and 1+ solar masses (more massive are brighter) Outflowing win ...
... Mass loss rate decreases but wind speed increases Hydrogen layer thins further from mass loss and He burning shell Star evolves at constant luminosity (~104LSun), shrinking and heating up, until nuclear burning ceases Masses between 0.55 and 1+ solar masses (more massive are brighter) Outflowing win ...
learning goals - Pearson Education
... St. Peter's Square at the Vatican in Rome. It is one of 21 surviving obelisks from ancient Egypt, most of which are now scattered around the world. Shadows cast by the obelisks may have been used to tell time. ...
... St. Peter's Square at the Vatican in Rome. It is one of 21 surviving obelisks from ancient Egypt, most of which are now scattered around the world. Shadows cast by the obelisks may have been used to tell time. ...
H-R Diagram
... To identify the characteristics of a star from data in the diagram To classify a star by its position in the diagram To compare the life cycle stages of stars based on their positions in the diagram Background The Hertzsprung-Russell diagram, or H-R diagram, is a graph in which a star's temperature ...
... To identify the characteristics of a star from data in the diagram To classify a star by its position in the diagram To compare the life cycle stages of stars based on their positions in the diagram Background The Hertzsprung-Russell diagram, or H-R diagram, is a graph in which a star's temperature ...
How do the most massive galaxies constrain theories of
... o CDM-based models of galaxy formation that produce reasonable agreement with the z=0 stellar mass function form enough massive galaxies at high z<2 o But default models do not produce enough massive red galaxies, especially at high redshift, because of continuous low level star formation. need a ne ...
... o CDM-based models of galaxy formation that produce reasonable agreement with the z=0 stellar mass function form enough massive galaxies at high z<2 o But default models do not produce enough massive red galaxies, especially at high redshift, because of continuous low level star formation. need a ne ...
Lecture19
... After H runs out, gravity or pressure will dominate, causing the star to change. After all fuel has been used, stars end their lives as either white dwarfs, neutron stars, or black holes, depending on their mass. ...
... After H runs out, gravity or pressure will dominate, causing the star to change. After all fuel has been used, stars end their lives as either white dwarfs, neutron stars, or black holes, depending on their mass. ...
Nobel Prize in Physics 2002: Riccardo Giaconni
... These X-ray detectors have revealed the violent side of our Universe. The X-ray image of the sky looks remarkably different from the optical image. Since X-ray photons have very high energy, it is easy to understand that they are produced by high energy particles. X-ray sources in the sky therefore ...
... These X-ray detectors have revealed the violent side of our Universe. The X-ray image of the sky looks remarkably different from the optical image. Since X-ray photons have very high energy, it is easy to understand that they are produced by high energy particles. X-ray sources in the sky therefore ...
ph507-16-4form
... Stars mainly form in clusters in giant molecular clouds. Over 90% of atoms are tied up in molecules. 99.99% is molecular hydrogen: H2 Over 120 other molecules discovered, including water, carbon monoxide CO, formaldehyde H2CO, ammonia NH3, hydrogen cyanide HCN, formic acid HCOOH and methanol CH3CO, ...
... Stars mainly form in clusters in giant molecular clouds. Over 90% of atoms are tied up in molecules. 99.99% is molecular hydrogen: H2 Over 120 other molecules discovered, including water, carbon monoxide CO, formaldehyde H2CO, ammonia NH3, hydrogen cyanide HCN, formic acid HCOOH and methanol CH3CO, ...
THe SCieNCe OF ASTrONOMY
... Astronomy has been called the oldest of the sciences, because its roots stretch deepest into antiquity. Ancient civilizations did not always practice astronomy in the same ways or for the same reasons that we study it today, but they nonetheless had some amazing achievements. Understanding this anci ...
... Astronomy has been called the oldest of the sciences, because its roots stretch deepest into antiquity. Ancient civilizations did not always practice astronomy in the same ways or for the same reasons that we study it today, but they nonetheless had some amazing achievements. Understanding this anci ...
Type I SuperNova
... The two might collide and form one star, which will collapse due to its mass and cause the carbon-detonation supernova. The carbon/oxygen fuse explosively, blowing the entire system into space and leaving nothing behind. ...
... The two might collide and form one star, which will collapse due to its mass and cause the carbon-detonation supernova. The carbon/oxygen fuse explosively, blowing the entire system into space and leaving nothing behind. ...
Chemical Universe. - University of Texas Astronomy
... art of Sneden’s work is helping to figure out what events influenced the chemical makeup of the present-day galaxy. The fact that the oldest stars contain more europium (an r-process element made in supernovae) than barium (an s-process element), for example, means that the early formation of elemen ...
... art of Sneden’s work is helping to figure out what events influenced the chemical makeup of the present-day galaxy. The fact that the oldest stars contain more europium (an r-process element made in supernovae) than barium (an s-process element), for example, means that the early formation of elemen ...
Abstract - UChicago High Energy Physics
... (BAU) remains one of the greatest puzzles of cosmology. As was pointed out by Sakharov, any model that explains BAU has to satisfy three conditions: (1) baryon number non-conservation, (2) C and CP violations, and (3) departure from thermal equilibrium [1]. In fact, many of the early Universe proble ...
... (BAU) remains one of the greatest puzzles of cosmology. As was pointed out by Sakharov, any model that explains BAU has to satisfy three conditions: (1) baryon number non-conservation, (2) C and CP violations, and (3) departure from thermal equilibrium [1]. In fact, many of the early Universe proble ...
How the Sun Shines
... enormous amounts of energy, thus increases the possible limit of the duration of life on this planet, and allows the time claimed by the geologist and biologist for the process of evolution. The discovery of radioactivity opened up the possibility that nuclear energy might be the origin of solar rad ...
... enormous amounts of energy, thus increases the possible limit of the duration of life on this planet, and allows the time claimed by the geologist and biologist for the process of evolution. The discovery of radioactivity opened up the possibility that nuclear energy might be the origin of solar rad ...
How the Sun Shines
... enormous amounts of energy, thus increases the possible limit of the duration of life on this planet, and allows the time claimed by the geologist and biologist for the process of evolution. The discovery of radioactivity opened up the possibility that nuclear energy might be the origin of solar rad ...
... enormous amounts of energy, thus increases the possible limit of the duration of life on this planet, and allows the time claimed by the geologist and biologist for the process of evolution. The discovery of radioactivity opened up the possibility that nuclear energy might be the origin of solar rad ...
How the Sun Shines - School of Natural Sciences
... enormous amounts of energy, thus increases the possible limit of the duration of life on this planet, and allows the time claimed by the geologist and biologist for the process of evolution. The discovery of radioactivity opened up the possibility that nuclear energy might be the origin of solar rad ...
... enormous amounts of energy, thus increases the possible limit of the duration of life on this planet, and allows the time claimed by the geologist and biologist for the process of evolution. The discovery of radioactivity opened up the possibility that nuclear energy might be the origin of solar rad ...
The Interstellar Medium
... 20. The best vacuum chambers on Earth can reach densities of about 1,000,000 atoms per cubic centimeter. Which of the four components of the interstellar medium has lower densities than such a chamber? a. The hot coronal gas. b. The hot coronal gas and HII intercloud medium. c. The hot coronal gas, ...
... 20. The best vacuum chambers on Earth can reach densities of about 1,000,000 atoms per cubic centimeter. Which of the four components of the interstellar medium has lower densities than such a chamber? a. The hot coronal gas. b. The hot coronal gas and HII intercloud medium. c. The hot coronal gas, ...