jack_so_hoang
01-12-2013, 08:52 AM
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TTC Video - Dark Matter Dark Energy - The Dark Side of the Universe | 4.54 GB
Genre: e-Learnning
In recent years, scientists have discovered that 95% of the contents of the cosmos are invisible to our current methods of direct detection. Yet something is holding galaxies and galaxy clusters together, and something else is causing space to fly apart.
Scientists call these invisible components dark matter and dark energy; "dark" because these phenomena do not emit light, not because we are not leaning more and more about them. In fact, dark matter and dark energy are the most eagerly studied subjects in astronomy and particle physics today.
If and when we discover this matter, it will further validate the "standard model" of physics which, so far, is the best description of how our universe works; if we cannot find this matter, or if it does not exist, then we will completely need to rethink the current "standard model" theory.
Join the exciting search for these mysterious phenomena in Dark Matter, Dark Energy: The Dark Side of the Universe, a mind-expanding, 24-lecture course taught by Dr. Sean Carroll, a theoretical physicist with a profound knowledge of the field. Starting with the early 20th-century work of Albert Einstein in theoretical physics and Edwin Hubble in observational astronomy, Dr. Carroll takes you through the key concepts of this revolutionary view of an expanding universe, concepts which have brought us—for the first time in history—to the brink of knowing what the universe is made of.
Welcome to the Dark Side
Everything you see with your eyes and with powerful instruments—stars, planets, galaxies, dust, and gas—and everything that you think of as atom-based matter is only 5% of what we now know exists. The rest is what Dr. Carroll calls the "dark sector," which consists of the following:
* Dark matter: First proposed in the 1930s, the idea that there is missing mass influencing the behavior of galaxies began to look more and more likely from the 1970s on. We know that it is matter because we can detect its gravitational influence on visible matter, but we cannot see it. An inventory of the distribution of dark matter throughout space shows that it constitutes 25% of the energy density of the universe.
* Dark energy: The greatest discoveries are the unexpected ones, which was the case in the late 1990s when two teams of astronomers competing to measure the rate at which the expansion of the universe is slowing down (as virtually everyone thought it must be) discovered that it is speeding up instead. A previously unknown, all-pervasive dark energy must be at work, representing 70% of the energy density of the universe.
Together, dark matter and dark energy account for all but a tiny fraction of everything there is; the ordinary matter that is left over is like the seasoning on the main dish. The story of how we arrived at this startling cosmic recipe is an absorbing drama that takes you through the breakthrough discoveries in astronomy and physics since the turn of the 20th century.
Concept by concept, Dark Matter, Dark Energy gives you the tools to appreciate this subject in depth. Dr. Carroll explains why scientists believe we live in a smooth, expanding universe that originated in a hot, dense state called the big bang.
You investigate the features of the infant universe that led to the large-scale structure we observe today, explore the standard model of particle physics and see how it provides the framework for understanding the interaction of all matter and radiation, and come to understand why dark matter and dark energy are logical consequences of a range of scientific theories and observations and how together they complete a grand picture of the universe.
Course Lecture Titles
1. Fundamental Building Blocks
2. The Smooth, Expanding Universe
3. Space, Time, and Gravity
4. Cosmology in Einstein``s Universe
5. Galaxies and Clusters
6. Gravitational Lensing
7. Atoms and Particles
8. The Standard Model of Particle Physics
9. Relic Particles from the Big Bang
10. Primordial Nucleosynthesis
11. The Cosmic Microwave Background
12. Dark Stars and Black Holes
13. WIMPs and Supersymmetry
14. The Accelerating Universe
15. The Geometry of Space
16. Smooth Tension and Acceleration
17. Vacuum Energy
18. Quintessence
19. Was Einstein Right?
20. Inflation
21. Strings and Extra Dimensions
22. Beyond the Observable Universe
23. Future Experiments
24. The Past and Future of the Dark Side
http://i51.fastpic.ru/big/2013/0111/b3/a09a87c4ee310757c44bb0c187f265b3.jpeg
(Premium Account Recommended!)
http://uploaded.net/file/n7owsaxf/TTC-Dark.Matter.Dark.Energy-The.Dark.Side.of.the.Universe-HuntR_PDU.part01.rar
http://uploaded.net/file/0lc0qrju/TTC-Dark.Matter.Dark.Energy-The.Dark.Side.of.the.Universe-HuntR_PDU.part02.rar
http://uploaded.net/file/og66gc9a/TTC-Dark.Matter.Dark.Energy-The.Dark.Side.of.the.Universe-HuntR_PDU.part03.rar
http://uploaded.net/file/wh564baz/TTC-Dark.Matter.Dark.Energy-The.Dark.Side.of.the.Universe-HuntR_PDU.part04.rar
http://uploaded.net/file/zecooiul/TTC-Dark.Matter.Dark.Energy-The.Dark.Side.of.the.Universe-HuntR_PDU.part05.rar
http://uploaded.net/file/s6vgf3si/TTC-Dark.Matter.Dark.Energy-The.Dark.Side.of.the.Universe-HuntR_PDU.part06.rar
http://uploaded.net/file/x75nam0p/TTC-Dark.Matter.Dark.Energy-The.Dark.Side.of.the.Universe-HuntR_PDU.part07.rar
http://uploaded.net/file/exb2x59y/TTC-Dark.Matter.Dark.Energy-The.Dark.Side.of.the.Universe-HuntR_PDU.part08.rar
http://uploaded.net/file/g4zz85de/TTC-Dark.Matter.Dark.Energy-The.Dark.Side.of.the.Universe-HuntR_PDU.part09.rar
TTC Video - Dark Matter Dark Energy - The Dark Side of the Universe | 4.54 GB
Genre: e-Learnning
In recent years, scientists have discovered that 95% of the contents of the cosmos are invisible to our current methods of direct detection. Yet something is holding galaxies and galaxy clusters together, and something else is causing space to fly apart.
Scientists call these invisible components dark matter and dark energy; "dark" because these phenomena do not emit light, not because we are not leaning more and more about them. In fact, dark matter and dark energy are the most eagerly studied subjects in astronomy and particle physics today.
If and when we discover this matter, it will further validate the "standard model" of physics which, so far, is the best description of how our universe works; if we cannot find this matter, or if it does not exist, then we will completely need to rethink the current "standard model" theory.
Join the exciting search for these mysterious phenomena in Dark Matter, Dark Energy: The Dark Side of the Universe, a mind-expanding, 24-lecture course taught by Dr. Sean Carroll, a theoretical physicist with a profound knowledge of the field. Starting with the early 20th-century work of Albert Einstein in theoretical physics and Edwin Hubble in observational astronomy, Dr. Carroll takes you through the key concepts of this revolutionary view of an expanding universe, concepts which have brought us—for the first time in history—to the brink of knowing what the universe is made of.
Welcome to the Dark Side
Everything you see with your eyes and with powerful instruments—stars, planets, galaxies, dust, and gas—and everything that you think of as atom-based matter is only 5% of what we now know exists. The rest is what Dr. Carroll calls the "dark sector," which consists of the following:
* Dark matter: First proposed in the 1930s, the idea that there is missing mass influencing the behavior of galaxies began to look more and more likely from the 1970s on. We know that it is matter because we can detect its gravitational influence on visible matter, but we cannot see it. An inventory of the distribution of dark matter throughout space shows that it constitutes 25% of the energy density of the universe.
* Dark energy: The greatest discoveries are the unexpected ones, which was the case in the late 1990s when two teams of astronomers competing to measure the rate at which the expansion of the universe is slowing down (as virtually everyone thought it must be) discovered that it is speeding up instead. A previously unknown, all-pervasive dark energy must be at work, representing 70% of the energy density of the universe.
Together, dark matter and dark energy account for all but a tiny fraction of everything there is; the ordinary matter that is left over is like the seasoning on the main dish. The story of how we arrived at this startling cosmic recipe is an absorbing drama that takes you through the breakthrough discoveries in astronomy and physics since the turn of the 20th century.
Concept by concept, Dark Matter, Dark Energy gives you the tools to appreciate this subject in depth. Dr. Carroll explains why scientists believe we live in a smooth, expanding universe that originated in a hot, dense state called the big bang.
You investigate the features of the infant universe that led to the large-scale structure we observe today, explore the standard model of particle physics and see how it provides the framework for understanding the interaction of all matter and radiation, and come to understand why dark matter and dark energy are logical consequences of a range of scientific theories and observations and how together they complete a grand picture of the universe.
Course Lecture Titles
1. Fundamental Building Blocks
2. The Smooth, Expanding Universe
3. Space, Time, and Gravity
4. Cosmology in Einstein``s Universe
5. Galaxies and Clusters
6. Gravitational Lensing
7. Atoms and Particles
8. The Standard Model of Particle Physics
9. Relic Particles from the Big Bang
10. Primordial Nucleosynthesis
11. The Cosmic Microwave Background
12. Dark Stars and Black Holes
13. WIMPs and Supersymmetry
14. The Accelerating Universe
15. The Geometry of Space
16. Smooth Tension and Acceleration
17. Vacuum Energy
18. Quintessence
19. Was Einstein Right?
20. Inflation
21. Strings and Extra Dimensions
22. Beyond the Observable Universe
23. Future Experiments
24. The Past and Future of the Dark Side
http://i51.fastpic.ru/big/2013/0111/b3/a09a87c4ee310757c44bb0c187f265b3.jpeg
(Premium Account Recommended!)
http://uploaded.net/file/n7owsaxf/TTC-Dark.Matter.Dark.Energy-The.Dark.Side.of.the.Universe-HuntR_PDU.part01.rar
http://uploaded.net/file/0lc0qrju/TTC-Dark.Matter.Dark.Energy-The.Dark.Side.of.the.Universe-HuntR_PDU.part02.rar
http://uploaded.net/file/og66gc9a/TTC-Dark.Matter.Dark.Energy-The.Dark.Side.of.the.Universe-HuntR_PDU.part03.rar
http://uploaded.net/file/wh564baz/TTC-Dark.Matter.Dark.Energy-The.Dark.Side.of.the.Universe-HuntR_PDU.part04.rar
http://uploaded.net/file/zecooiul/TTC-Dark.Matter.Dark.Energy-The.Dark.Side.of.the.Universe-HuntR_PDU.part05.rar
http://uploaded.net/file/s6vgf3si/TTC-Dark.Matter.Dark.Energy-The.Dark.Side.of.the.Universe-HuntR_PDU.part06.rar
http://uploaded.net/file/x75nam0p/TTC-Dark.Matter.Dark.Energy-The.Dark.Side.of.the.Universe-HuntR_PDU.part07.rar
http://uploaded.net/file/exb2x59y/TTC-Dark.Matter.Dark.Energy-The.Dark.Side.of.the.Universe-HuntR_PDU.part08.rar
http://uploaded.net/file/g4zz85de/TTC-Dark.Matter.Dark.Energy-The.Dark.Side.of.the.Universe-HuntR_PDU.part09.rar