Lesson 13 - Oregon State University
... Big Bang Nucleosynthesis After about 30 m, nucleosynthesis ceased. The temperature was ~ 3 x 108K and the density was ~ 30 kg/m3. Nuclear matter was 76% by mass protons, 24% alpha particles with traces of deuterium, 3He and 7Li. The /n/p ratio is 109/13/87. The relative ratio of p/4He/d/3He/7Li is ...
... Big Bang Nucleosynthesis After about 30 m, nucleosynthesis ceased. The temperature was ~ 3 x 108K and the density was ~ 30 kg/m3. Nuclear matter was 76% by mass protons, 24% alpha particles with traces of deuterium, 3He and 7Li. The /n/p ratio is 109/13/87. The relative ratio of p/4He/d/3He/7Li is ...
Chapter 6 The inflationary universe In this chapter, we encounter a
... the cosmic background radiation known to be necessary for the seeding of the galaxies. Such inhomogeneities had not yet been observed experimentally; however, theoreticians had long predicted the amplitude and shape of non-uniformities in density that could give rise to today’s structures (known as ...
... the cosmic background radiation known to be necessary for the seeding of the galaxies. Such inhomogeneities had not yet been observed experimentally; however, theoreticians had long predicted the amplitude and shape of non-uniformities in density that could give rise to today’s structures (known as ...
Quantum Property of Empty Space
... which to study the fundamental laws of nature." says Roberto Turolla (University of Padua, Italy). After careful analysis of the VLT data, Mignani and his team detected linear polarisation—at a significant degree of around 16%—that they say is likely due to the boosting effect of vacuum birefringenc ...
... which to study the fundamental laws of nature." says Roberto Turolla (University of Padua, Italy). After careful analysis of the VLT data, Mignani and his team detected linear polarisation—at a significant degree of around 16%—that they say is likely due to the boosting effect of vacuum birefringenc ...
Visions of the Universe
... title suggests, in this course we shall study the discoveries of modern astronomy and their implications for our place in the cosmos. Within the past decade, humans have discovered new worlds around other stars and determined that the universe is expanding at an accelerating rate. You are lucky to b ...
... title suggests, in this course we shall study the discoveries of modern astronomy and their implications for our place in the cosmos. Within the past decade, humans have discovered new worlds around other stars and determined that the universe is expanding at an accelerating rate. You are lucky to b ...
Ch 1 Jan 17
... (Assume the universe is 14 billion years old.) A. Because no galaxies exist at such a great distance. B. Galaxies may exist at that distance, but their light would be too faint for our telescopes to see. C. Because looking 15 billion light-years away means looking to a time before the universe exist ...
... (Assume the universe is 14 billion years old.) A. Because no galaxies exist at such a great distance. B. Galaxies may exist at that distance, but their light would be too faint for our telescopes to see. C. Because looking 15 billion light-years away means looking to a time before the universe exist ...
Unit 6: The Present Universe
... emitted. This observational fact is now known as Hubble’s Law. Hubble recognized that he had established an important piece of information about the nature of the universe, but he did not know exactly what that information was telling us. He was an observational astronomer, and his discovery needed ...
... emitted. This observational fact is now known as Hubble’s Law. Hubble recognized that he had established an important piece of information about the nature of the universe, but he did not know exactly what that information was telling us. He was an observational astronomer, and his discovery needed ...
Big Whack Theory: Invasion of Parasites, Bacteria, Virus, and Fungus
... explain the creation of the universe 13.8 billion years ago. The Big Bang Theory was developed in 1929 based on Edwin Hubble’s observation that the distance far away galaxies were moving away from each other was strongly correlated with their Doppler’s redshifts. It has been a darling scientific ach ...
... explain the creation of the universe 13.8 billion years ago. The Big Bang Theory was developed in 1929 based on Edwin Hubble’s observation that the distance far away galaxies were moving away from each other was strongly correlated with their Doppler’s redshifts. It has been a darling scientific ach ...
File - Prairie Science
... Stars begin as a nebula. Gravity of the dust particles pull them close together. As more and more particles build up, more gravitational attraction is created. ...
... Stars begin as a nebula. Gravity of the dust particles pull them close together. As more and more particles build up, more gravitational attraction is created. ...
Lecture
... • The equations of general relativity show that there are two possible states for the universe, closed and open. – In a closed universe there is enough matter and energy and their combined gravitational pull will stop the expansion and cause it to contract again. – In an open universe the combined g ...
... • The equations of general relativity show that there are two possible states for the universe, closed and open. – In a closed universe there is enough matter and energy and their combined gravitational pull will stop the expansion and cause it to contract again. – In an open universe the combined g ...
powerpoint file
... The Universe originated in an explosion called the “Big Bang”. Everything started out 13.7 billion years ago with “zero” size and “infinite” temperature. Since then, it has been expanding and cooling. Now its temperature is 2.735 K. While the temperature was still high enough — at age 2 to 30 minute ...
... The Universe originated in an explosion called the “Big Bang”. Everything started out 13.7 billion years ago with “zero” size and “infinite” temperature. Since then, it has been expanding and cooling. Now its temperature is 2.735 K. While the temperature was still high enough — at age 2 to 30 minute ...
faster than light - Site officiel de l`Association Savoir sans
... The quantity s has an INTRINSIC CHARACTER. Over any trajectory AB drawn on the sphere, the distance covered is s. The cosmological model, also called the STANDARD MODEL is a solution R s. And all that with a set of equations populated with values of G, c, m, e, , , considered to be ABSOLUTE CONSTA ...
... The quantity s has an INTRINSIC CHARACTER. Over any trajectory AB drawn on the sphere, the distance covered is s. The cosmological model, also called the STANDARD MODEL is a solution R s. And all that with a set of equations populated with values of G, c, m, e, , , considered to be ABSOLUTE CONSTA ...
What Do We Really Know About the Universe?
... "We take the side of science in spite of the patent absurdity of some of its constructs, in spite of the failure to fulfill many of its extravagant promises of health and life, in spite of the tolerance of the scientific community for unsubstantiated just-so stories, because we have a prior commitme ...
... "We take the side of science in spite of the patent absurdity of some of its constructs, in spite of the failure to fulfill many of its extravagant promises of health and life, in spite of the tolerance of the scientific community for unsubstantiated just-so stories, because we have a prior commitme ...
1 - Uplift North Hills Prep
... (a) The diagram below represents a spherical region of space based on Newton’s model of the universe. Earth is at the centre of the region. The dark line represents a very thin spherical shell of space distance R from Earth. With reference to the diagram and Newton’s model of the universe explain qu ...
... (a) The diagram below represents a spherical region of space based on Newton’s model of the universe. Earth is at the centre of the region. The dark line represents a very thin spherical shell of space distance R from Earth. With reference to the diagram and Newton’s model of the universe explain qu ...
Document
... (a) The diagram below represents a spherical region of space based on Newton’s model of the universe. Earth is at the centre of the region. The dark line represents a very thin spherical shell of space distance R from Earth. With reference to the diagram and Newton’s model of the universe explain qu ...
... (a) The diagram below represents a spherical region of space based on Newton’s model of the universe. Earth is at the centre of the region. The dark line represents a very thin spherical shell of space distance R from Earth. With reference to the diagram and Newton’s model of the universe explain qu ...
Lecture 39: Early Universe Test 3 overview 11/21
... Cosmology. Hubble law Universe is expanding, gives universe’s age, depends on Hubble “constant” changes with time. Closed universe has gravity slowing the expansion so it starts to contract. Open universe expands forever. Early universe was very hot and when matter was created. First electrons, pr ...
... Cosmology. Hubble law Universe is expanding, gives universe’s age, depends on Hubble “constant” changes with time. Closed universe has gravity slowing the expansion so it starts to contract. Open universe expands forever. Early universe was very hot and when matter was created. First electrons, pr ...
Unit 2 Lesson 1
... By the end of this lesson, you should be able to describe the structure of the universe, including the scale of distance in the universe. ...
... By the end of this lesson, you should be able to describe the structure of the universe, including the scale of distance in the universe. ...
The Bible and big bang cosmology
... “The complete birth of a star has never been observed. The principles of physics demand some special conditions for star formation and also for a long time period. A cloud of hydrogen gas must be compressed to a sufficiently small size so that gravity dominates. continued ...
... “The complete birth of a star has never been observed. The principles of physics demand some special conditions for star formation and also for a long time period. A cloud of hydrogen gas must be compressed to a sufficiently small size so that gravity dominates. continued ...
Teacher`s Guide - Discovery Education
... Context: Our sun is one of 100 to 200 billion stars in our Milky Way galaxy. light-year Definition: The distance light travels in one year; about six trillion miles Context: Astronomers use light-years to describe the vast distances in the universe. planet Definition: A low-mass body that orbits a s ...
... Context: Our sun is one of 100 to 200 billion stars in our Milky Way galaxy. light-year Definition: The distance light travels in one year; about six trillion miles Context: Astronomers use light-years to describe the vast distances in the universe. planet Definition: A low-mass body that orbits a s ...
Unification of Gravity and Electromagnetism I: Mach`s Principle and
... This is the form associated with Galileo’s law of falling bodies and Newton’s theory of gravity which uses the equality of gravitational and inertial mass and was confirmed to high precision by the Eötvös experiment. In this form it is usually referred to as the Weak Equivalence Principle (WEP). S ...
... This is the form associated with Galileo’s law of falling bodies and Newton’s theory of gravity which uses the equality of gravitational and inertial mass and was confirmed to high precision by the Eötvös experiment. In this form it is usually referred to as the Weak Equivalence Principle (WEP). S ...
Beyond the Big Bang - Physics Department, Princeton University
... scene. By gathering light emitted long ago from more distant objects and applying the physical principles learned and tested on Earth, astronomers have been able to reconstruct more and more of what happened in the past. The epoch we call Act Two, which began just one second after the big bang and c ...
... scene. By gathering light emitted long ago from more distant objects and applying the physical principles learned and tested on Earth, astronomers have been able to reconstruct more and more of what happened in the past. The epoch we call Act Two, which began just one second after the big bang and c ...
Harvey`s presentation
... The Next Large X-ray Mission Constellation-X Harvey Tananbaum and the Constellation-X Team ...
... The Next Large X-ray Mission Constellation-X Harvey Tananbaum and the Constellation-X Team ...
The Electric Bridge
... 3. Fusing of specks of æther into electric charges. 4. Cohering of these charges to constitute atoms of matter. 5. Agglomeration of matter into clouds endowed with rotation. 6. Gradual increase of rotating speed until masses emit rays which break into great stars of high temperature, the radiation l ...
... 3. Fusing of specks of æther into electric charges. 4. Cohering of these charges to constitute atoms of matter. 5. Agglomeration of matter into clouds endowed with rotation. 6. Gradual increase of rotating speed until masses emit rays which break into great stars of high temperature, the radiation l ...
ASTR 1020 General Astronomy: Stars and Galaxies REVIEW
... Takes δt instead. Longer. It looks like things are moving slower. If you are near the black hole, the rest of the universe appears to be moving faster. ...
... Takes δt instead. Longer. It looks like things are moving slower. If you are near the black hole, the rest of the universe appears to be moving faster. ...
General Astronomy Dark Matter
... • What of the next 22.5% of the critical density? • This cannot be made of normal matter, or it would have affected the formation of chemical elements in the Big Bang • So what can it be? Many suggestions have been made, including primordial black holes, massive neutrinos and a host of other exotic ...
... • What of the next 22.5% of the critical density? • This cannot be made of normal matter, or it would have affected the formation of chemical elements in the Big Bang • So what can it be? Many suggestions have been made, including primordial black holes, massive neutrinos and a host of other exotic ...
URL - StealthSkater
... If time machines are possible, it is likely that someone in the Future will already have constructed one. After all, in the Future there is time to complete even the largest engineering project! Even if humans are not up to the task, creatures from other planets may try. So why are we not overrun by ...
... If time machines are possible, it is likely that someone in the Future will already have constructed one. After all, in the Future there is time to complete even the largest engineering project! Even if humans are not up to the task, creatures from other planets may try. So why are we not overrun by ...
Big Bang
The Big Bang theory is the prevailing cosmological model for the universe from the earliest known periods through its subsequent large-scale evolution. The model accounts for the fact that the universe expanded from a very high density and high temperature state, and offers a comprehensive explanation for a broad range of observed phenomena, including the abundance of light elements, the cosmic microwave background, large scale structure, and Hubble's Law. If the known laws of physics are extrapolated beyond where they are valid, there is a singularity. Modern measurements place this moment at approximately 13.8 billion years ago, which is thus considered the age of the universe. After the initial expansion, the universe cooled sufficiently to allow the formation of subatomic particles, and later simple atoms. Giant clouds of these primordial elements later coalesced through gravity to form stars and galaxies.Since Georges Lemaître first noted, in 1927, that an expanding universe might be traced back in time to an originating single point, scientists have built on his idea of cosmic expansion. While the scientific community was once divided between supporters of two different expanding universe theories, the Big Bang and the Steady State theory, accumulated empirical evidence provides strong support for the former. In 1929, from analysis of galactic redshifts, Edwin Hubble concluded that galaxies are drifting apart, important observational evidence consistent with the hypothesis of an expanding universe. In 1965, the cosmic microwave background radiation was discovered, which was crucial evidence in favor of the Big Bang model, since that theory predicted the existence of background radiation throughout the universe before it was discovered. More recently, measurements of the redshifts of supernovae indicate that the expansion of the universe is accelerating, an observation attributed to dark energy's existence. The known physical laws of nature can be used to calculate the characteristics of the universe in detail back in time to an initial state of extreme density and temperature.