List of Illustrations
... Invention of the vacuum tube – ‘Cathode rays’ and ‘canal rays’ – William Crookes: the Crookes tube and the corpuscular interpretation of cathode rays – Cathode rays are shown to move far slower than light – The discovery of the electron – Wilhelm Röntgen & the discovery of X-rays – Radioactivity; Be ...
... Invention of the vacuum tube – ‘Cathode rays’ and ‘canal rays’ – William Crookes: the Crookes tube and the corpuscular interpretation of cathode rays – Cathode rays are shown to move far slower than light – The discovery of the electron – Wilhelm Röntgen & the discovery of X-rays – Radioactivity; Be ...
File - 5th Grade Science Almost done!!!!!!!!!
... down the homework (see next slide) in stone-silence. • After about 20 to 30 seconds of silence I tell the students “Please begin the warm up.” • Please go through the ppt with the students. Students will have to write items in blue as notes in their Science Notebooks. • Please give appropriate time ...
... down the homework (see next slide) in stone-silence. • After about 20 to 30 seconds of silence I tell the students “Please begin the warm up.” • Please go through the ppt with the students. Students will have to write items in blue as notes in their Science Notebooks. • Please give appropriate time ...
Slide 1
... release of nuclear energy. When the star is particularly massive, then its core will collapse and in so doing will release a huge amount of energy. This will cause a blast wave that ejects the star’s envelop into interstellar space. Many supernovae have been seen in nearby galaxies, they are relativ ...
... release of nuclear energy. When the star is particularly massive, then its core will collapse and in so doing will release a huge amount of energy. This will cause a blast wave that ejects the star’s envelop into interstellar space. Many supernovae have been seen in nearby galaxies, they are relativ ...
Measuring Distances - Stockton University
... Due to the spin of the galaxy, an observer will see part of the galaxy approaching them and part of the galaxy running away. This causes the emission from the galaxy to show redshifted, blueshifted, and no-shifted emission. The motion will thus cause a narrow line, e.g., a line due to some element l ...
... Due to the spin of the galaxy, an observer will see part of the galaxy approaching them and part of the galaxy running away. This causes the emission from the galaxy to show redshifted, blueshifted, and no-shifted emission. The motion will thus cause a narrow line, e.g., a line due to some element l ...
Galaxy Evolution
... Very shortly after star formation sets in, the most massive stars undergo a core-collapse supernova; the mechanical energy is partly transferred to the gas surrounding the explosion, heating it and delaying it from forming stars. ...
... Very shortly after star formation sets in, the most massive stars undergo a core-collapse supernova; the mechanical energy is partly transferred to the gas surrounding the explosion, heating it and delaying it from forming stars. ...
Origin of the Chemical Elements
... Chemical elements are central for the existence of life and the richness and variety of our environment. Therefore, one of the basic questions concerns the origin of the chemical elements. The answer is complex because it relies on dynamical processes from elementary particles and nuclei to stars an ...
... Chemical elements are central for the existence of life and the richness and variety of our environment. Therefore, one of the basic questions concerns the origin of the chemical elements. The answer is complex because it relies on dynamical processes from elementary particles and nuclei to stars an ...
ON THE ORIGIN OF THE INERTIA
... interest for Mach and also for Einstein, since for them this action is not solely real but essential. However, years after developing the General Relativity theory, Einstein understood that he had not achieved the objectives that he, like Mach, pursued. Einstein had also changed his mind concerning ...
... interest for Mach and also for Einstein, since for them this action is not solely real but essential. However, years after developing the General Relativity theory, Einstein understood that he had not achieved the objectives that he, like Mach, pursued. Einstein had also changed his mind concerning ...
astro-ph/0504597 PDF
... The supernovae are very interesting events as they help us in understanding some astrophysical issues such as stellar evolution, stellar mass loss, collapse and explosion physics, radiative hydrodynamics, galactic structure and many more. They trigger new star formation in the galaxy, which are heav ...
... The supernovae are very interesting events as they help us in understanding some astrophysical issues such as stellar evolution, stellar mass loss, collapse and explosion physics, radiative hydrodynamics, galactic structure and many more. They trigger new star formation in the galaxy, which are heav ...
globular cluster - Harding University
... Cepheid variables close enough to measure their distance using direct parallax measurements. Distances to the Cepheid variables in our own galaxy were determined using statistical techniques, and were dependent upon these theoretical calculations. This situation recently changed with the Hipparcos s ...
... Cepheid variables close enough to measure their distance using direct parallax measurements. Distances to the Cepheid variables in our own galaxy were determined using statistical techniques, and were dependent upon these theoretical calculations. This situation recently changed with the Hipparcos s ...
• Teacher developed presentations. • Teacher developed laboratory
... 3.3.10. B Origin and Evolution of the Universe ...
... 3.3.10. B Origin and Evolution of the Universe ...
Contents - Classroom Complete Press
... a) Label the diagrams using the following words: star, solar system, galaxy. ...
... a) Label the diagrams using the following words: star, solar system, galaxy. ...
Getting to Know: Structure of the Universe
... In this lesson, you will learn more about what scientists have found out about the universe so far—and what questions they still have. ...
... In this lesson, you will learn more about what scientists have found out about the universe so far—and what questions they still have. ...
My Favorite Universe
... essays out of 100 or so written for Natural History magazine since 1995. Although they do not follow a particular curriculum, they nonetheless represent the professor’s favorite cosmic subjects. And, not surprisingly, they represent topics for which the general public harbors a sustained and insatia ...
... essays out of 100 or so written for Natural History magazine since 1995. Although they do not follow a particular curriculum, they nonetheless represent the professor’s favorite cosmic subjects. And, not surprisingly, they represent topics for which the general public harbors a sustained and insatia ...
The star Betelgeuse is about 500 light years away from us. If this star
... e) galaxy collisions shouldn't have been more common in the past than they are now The Milky Way star Procyon is 11 light-years from the Sun while the Milky Way star Acrux is 320 light-years from the Sun. Hubble’s Law implies that: a) Procyon is moving at the same speed as Acrux b) Procyon ...
... e) galaxy collisions shouldn't have been more common in the past than they are now The Milky Way star Procyon is 11 light-years from the Sun while the Milky Way star Acrux is 320 light-years from the Sun. Hubble’s Law implies that: a) Procyon is moving at the same speed as Acrux b) Procyon ...
File
... • The protostar continues to contract and increase in temperature for several million years. Eventually the gas in the region becomes so hot that its electrons are stripped from their parent atoms. • The nuclei and free electrons move independently, and the gas is then considered a separate state of ...
... • The protostar continues to contract and increase in temperature for several million years. Eventually the gas in the region becomes so hot that its electrons are stripped from their parent atoms. • The nuclei and free electrons move independently, and the gas is then considered a separate state of ...
Multiple Choice, continued
... • The protostar continues to contract and increase in temperature for several million years. Eventually the gas in the region becomes so hot that its electrons are stripped from their parent atoms. • The nuclei and free electrons move independently, and the gas is then considered a separate state of ...
... • The protostar continues to contract and increase in temperature for several million years. Eventually the gas in the region becomes so hot that its electrons are stripped from their parent atoms. • The nuclei and free electrons move independently, and the gas is then considered a separate state of ...
Nobel Prize in Physics 2002: Riccardo Giaconni
... view of evolution of the Universe and cosmology. Scientists are yet to come to any firm conclusions about the X-ray background glow of the Universe - which was one of Giaconni's initial discoveries - but it is believed that it was produced about ten billion years ago. When the homogeneously distribu ...
... view of evolution of the Universe and cosmology. Scientists are yet to come to any firm conclusions about the X-ray background glow of the Universe - which was one of Giaconni's initial discoveries - but it is believed that it was produced about ten billion years ago. When the homogeneously distribu ...
Test 3 Version 3 1. Milky Way halo stars follow: (a) differential
... 15. If star formation occurs early during the collapse of a gas cloud to form a galaxy, the result will be a(n): (a) elliptical galaxy, (b) normal spiral galaxy, (c) barred spiral galaxy, (d) irregular galaxy. 16. The spiral arms of a spiral galaxy are thought to have been caused by: (a) Newton’s l ...
... 15. If star formation occurs early during the collapse of a gas cloud to form a galaxy, the result will be a(n): (a) elliptical galaxy, (b) normal spiral galaxy, (c) barred spiral galaxy, (d) irregular galaxy. 16. The spiral arms of a spiral galaxy are thought to have been caused by: (a) Newton’s l ...
Beyond Our Solar System
... – Human eyes are sensitive to only a narrow range of colors. – As you explore the universe, you will learn to use a wide range of ‘colors’—from X rays to radio waves—to reveal sights invisible to ...
... – Human eyes are sensitive to only a narrow range of colors. – As you explore the universe, you will learn to use a wide range of ‘colors’—from X rays to radio waves—to reveal sights invisible to ...
WIMPs and MACHOs - Caltech Astronomy
... GeV, such a discovery would be very important, especially if the Higgs boson showed non-standard properties indicative of supersymmetry. It is correct to think of the particle physics search for supersymmetry as a powerful search for the dark matter. Direct detection of WIMPs A satisfying solution t ...
... GeV, such a discovery would be very important, especially if the Higgs boson showed non-standard properties indicative of supersymmetry. It is correct to think of the particle physics search for supersymmetry as a powerful search for the dark matter. Direct detection of WIMPs A satisfying solution t ...
Section 6 The Expanding Universe The Doppler Effect
... universe (originally suggested by Friedmann, but advocated by Einstein and Richard Tolman) and Fritz Zwicky’s tired light hypothesis. After World War II, two distinct possibilities emerged. One was Fred Hoyle’s steady-state model, whereby new matter would be created as the universe seemed to expand. ...
... universe (originally suggested by Friedmann, but advocated by Einstein and Richard Tolman) and Fritz Zwicky’s tired light hypothesis. After World War II, two distinct possibilities emerged. One was Fred Hoyle’s steady-state model, whereby new matter would be created as the universe seemed to expand. ...
Extragalactic AO Science
... AO systems produce additional background in Near-IR and reduce throughput further making it difficult to observe faint extended sources. Normal galaxy disks only achieve a maximum SB of K~16 mag/sq arcsec and this fades as (1+z)4. This means all normal disks are fainter than 22.5 mag within 0.05x0.0 ...
... AO systems produce additional background in Near-IR and reduce throughput further making it difficult to observe faint extended sources. Normal galaxy disks only achieve a maximum SB of K~16 mag/sq arcsec and this fades as (1+z)4. This means all normal disks are fainter than 22.5 mag within 0.05x0.0 ...
Stars
... fuse together inside a star, helium is produced. Heavier elements are produced when a star becomes a red giant. Only a supernova can produce elements heavier than iron, such as silver, gold and uranium. ...
... fuse together inside a star, helium is produced. Heavier elements are produced when a star becomes a red giant. Only a supernova can produce elements heavier than iron, such as silver, gold and uranium. ...
WIMPs and MACHOs - Caltech Astronomy
... GeV, such a discovery would be very important, especially if the Higgs boson showed non-standard properties indicative of supersymmetry. It is correct to think of the particle physics search for supersymmetry as a powerful search for the dark matter. Direct detection of WIMPs A satisfying solution t ...
... GeV, such a discovery would be very important, especially if the Higgs boson showed non-standard properties indicative of supersymmetry. It is correct to think of the particle physics search for supersymmetry as a powerful search for the dark matter. Direct detection of WIMPs A satisfying solution t ...
T Einstein’s Mirage Paul L. Schechter
... In the half century following the confirmation of general relativity, the idea that cosmic mirages might actually be observed was taken seriously byonly a small number of astrophysicists. Most of the papers written on the subject treated them as academic curiosities, far too unlikely to actually be ...
... In the half century following the confirmation of general relativity, the idea that cosmic mirages might actually be observed was taken seriously byonly a small number of astrophysicists. Most of the papers written on the subject treated them as academic curiosities, far too unlikely to actually be ...
Physical cosmology
Physical cosmology is the study of the largest-scale structures and dynamics of the Universe and is concerned with fundamental questions about its origin, structure, evolution, and ultimate fate. For most of human history, it was a branch of metaphysics and religion. Cosmology as a science originated with the Copernican principle, which implies that celestial bodies obey identical physical laws to those on Earth, and Newtonian mechanics, which first allowed us to understand those physical laws.Physical cosmology, as it is now understood, began with the development in 1915 of Albert Einstein's general theory of relativity, followed by major observational discoveries in the 1920s: first, Edwin Hubble discovered that the universe contains a huge number of external galaxies beyond our own Milky Way; then, work by Vesto Slipher and others showed that the universe is expanding. These advances made it possible to speculate about the origin of the universe, and allowed the establishment of the Big Bang Theory, by Georges Lemaitre, as the leading cosmological model. A few researchers still advocate a handful of alternative cosmologies; however, most cosmologists agree that the Big Bang theory explains the observations better.Dramatic advances in observational cosmology since the 1990s, including the cosmic microwave background, distant supernovae and galaxy redshift surveys, have led to the development of a standard model of cosmology. This model requires the universe to contain large amounts of dark matter and dark energy whose nature is currently not well understood, but the model gives detailed predictions that are in excellent agreement with many diverse observations.Cosmology draws heavily on the work of many disparate areas of research in theoretical and applied physics. Areas relevant to cosmology include particle physics experiments and theory, theoretical and observational astrophysics, general relativity, quantum mechanics, and plasma physics.