Trang Chính
Latest images
Tìm kiếm
Đăng ký
Đăng Nhập
Liên hệ
Black Holes Explained
Trang 1 trong tổng số 1 trang
Black Holes Explained
by Admin Sun 22 Aug 2010, 10:42 am
Black Holes Explained
Course No. 1841 (12 lectures, 30 minutes/lecture)
Taught by Alex Filippenko
University of California, Berkeley
Ph.D., California Institute of Technology
Average Customer Rating4.6 out of 5
15 of 16(94%)customers would recommend the course to a friend
Imagine a region in space where the force of gravity is so strong that nothing?not even light?can escape. A region with physical conditions so extreme that they have not yet been reproduced in any terrestrial laboratory. A region so dense that an object as tiny as a walnut would have the same mass as our entire planet.
This phenomenon?first formed in the equations of Einstein and popularized in the stories of science-fiction authors?is a black hole: one of the most exotic, mind-boggling, and profound subjects in astrophysics.
Black holes are at the heart of some of the most intriguing phenomena in the universe. Not only that, they are ideal gateways to fundamental and cutting-edge concepts in astronomy, including the following:
General relativity: Einstein's general theory of relativity provides the framework for understanding black holes, in which the warping of both space and time is so great that they are effectively cut off from the rest of the universe.
Monsters at the heart of galaxies: Detailed studies of the centers of galaxies reveal that supermassive black holes are common, with masses of millions to billions of suns. Nearly every large galaxy has one.
Wormholes: According to general relativity, black holes may be connected to passages through space-time known as wormholes. The jury is still out on whether they exist and whether they would allow time travel and trips to other universes.
Is the universe like a hologram? Quantum theory suggests that information is not lost inside a black hole but instead is encoded around it like a hologram?a phenomenon that may characterize the universe as a whole!
Indeed, the idea that the universe itself has properties similar to black holes shows that these objects play a pivotal role at all scales: from the truly cosmic to the subatomic realm, where theory suggests the existence of mini-black holes that may have been created in the aftermath of the big bang and that could be produced in the latest generation of particle accelerators.
Nearly everyone has heard of black holes, but few people outside of complex scientific fields understand their true nature and their implications for our universe. Black Holes Explained finally makes this awe-inspiring cosmological subject graspable, with 12 lavishly illustrated lectures by veteran Great Courses Professor Alex Filippenko, a distinguished astronomer and award-winning teacher at the University of California, Berkeley.
Travel into a Black Hole
No movie, novel, or other fictional treatment of black holes matches Professor Filippenko's absorbing presentation of the actual science behind these amazing objects. In Lectures 8 and 9 he uses computer simulations created by fellow astronomers to conduct a virtual tour around and into a supermassive black hole, and then through a wormhole to another universe. Among the features you investigate are these:
Einstein ring: As you approach a black hole, the starlight behind it spectacularly bends in a kaleidoscopic effect called gravitational lensing. This phenomenon can produce a series of halos known as Einstein rings.
Photon sphere: Closer to a black hole, you come to a zone where an object must orbit at the speed of light to avoid falling in. Here, light can move in circular orbits and, in principle, you can look forward and see the back of your head.
Event horizon: Continuing your plunge, you reach a boundary called the event horizon. Once you cross it, you can't return. Anyone watching from outside sees time come to a standstill, as you appear to stop and motionlessly fade from view.
Singularity: After crossing the event horizon, you are only a minute away from the singularity, the hypothetical point of infinite density. Powerful tidal forces squeeze and stretch your body, until you are ultimately crushed to oblivion.
Mission Invisible
Recently elected to the prestigious National Academy of Sciences, Dr. Filippenko has devoted much of his research career to black holes, discovering some of the best evidence for the existence of stellar-mass black holes in the Milky Way Galaxy, and participating in studies of supermassive black holes using the Hubble Space Telescope.
Drawing on extensive graphics, including hundreds of stunning astronomical images, Dr. Filippenko shows how scientists have been able to read the evidence to surmise a great deal about objects that are inherently invisible. Among the most dramatic clues are high-energy beams of radiation that were first detected by spy satellites in the 1960s. These powerful "gamma-ray bursts" were long a mystery, but they are now thought to be the dying gasps of massive stars in distant galaxies, collapsing to form black holes.
Dr. Filippenko also dispels several myths about black holes, such as that they are "cosmic vacuum cleaners," drawing in matter from afar with irresistible force. In fact, if the sun were compressed to form a black hole, there would be no effect on the orbits of the planets. Similarly, fears that mini-black holes created by particle accelerators will grow and devour the Earth have no basis in physics.
In popular usage, a black hole is a place of utter emptiness. But in this engaging course, you learn about how there is much more to them than that. Astronomers have brought black holes out of the shadows to reveal that they are a widespread and vital phenomenon in the universe with unexpected implications for all scales of reality. Black holes are intriguingly counterintuitive, gratifyingly comprehensible, and surprisingly relevant to our overall understanding of the universe?as you will discover in Black Holes Explained.
About Your Professor
Dr. Alex Filippenko is the Richard and Rhoda Goldman Distinguished Professor in the Physical Sciences at the University of California, Berkeley. He received his bachelor's degree in Physics from the University of California, Santa Barbara, and earned his doctorate in Astronomy from the California Institute of Technology.
Professor Filippenko's research accomplishments are among the most highly cited in his field and in 2009 earned him election to the National Academy of Sciences. Also lauded as a teacher, he has garnered many awards at Berkeley, including the Donald S. Noyce Prize and the Distinguished Teaching Award, and he was voted Best Professor six times in student polls. At the end of 2006, he was honored as the Doctoral and Research Universities National Professor of the Year by the Carnegie Foundation for the Advancement of Teaching and the Council for Advancement and Support of Education.
Dr. Filippenko is coauthor of The Cosmos: Astronomy in the New Millennium, winner of the 2001 Texty Excellence Award for best new textbook in the physical sciences. He also received the 2004 Carl Sagan Prize for Science Popularization, has been in numerous television documentaries, and has delivered more than 500 public lectures on astronomy.
This course features state-of-the-art animations, models, graphs and tables, illustrations, and breathtaking photographs?many collected from NASA and professional astronomers.
Course Lecture Titles
A General Introduction to Black Holes
The Violent Deaths of Massive Stars
Gamma-Ray Bursts?The Birth of Black Holes
Searching for Stellar-Mass Black Holes
Monster of the Milky Way and Other Galaxies
Quasars?Feasting Supermassive Black Holes
Gravitational Waves?Ripples in Space-Time
The Wildest Ride in the Universe
Shortcuts through the Universe and Beyond?
Stephen Hawking and Black Hole Evaporation
Black Holes and the Holographic Universe
Black Holes and the Large Hadron Collider
MU
RS
Pass if needed
Links are interchangeable.
Enjoy!
Course No. 1841 (12 lectures, 30 minutes/lecture)
Taught by Alex Filippenko
University of California, Berkeley
Ph.D., California Institute of Technology
Average Customer Rating4.6 out of 5
15 of 16(94%)customers would recommend the course to a friend
Imagine a region in space where the force of gravity is so strong that nothing?not even light?can escape. A region with physical conditions so extreme that they have not yet been reproduced in any terrestrial laboratory. A region so dense that an object as tiny as a walnut would have the same mass as our entire planet.
This phenomenon?first formed in the equations of Einstein and popularized in the stories of science-fiction authors?is a black hole: one of the most exotic, mind-boggling, and profound subjects in astrophysics.
Black holes are at the heart of some of the most intriguing phenomena in the universe. Not only that, they are ideal gateways to fundamental and cutting-edge concepts in astronomy, including the following:
General relativity: Einstein's general theory of relativity provides the framework for understanding black holes, in which the warping of both space and time is so great that they are effectively cut off from the rest of the universe.
Monsters at the heart of galaxies: Detailed studies of the centers of galaxies reveal that supermassive black holes are common, with masses of millions to billions of suns. Nearly every large galaxy has one.
Wormholes: According to general relativity, black holes may be connected to passages through space-time known as wormholes. The jury is still out on whether they exist and whether they would allow time travel and trips to other universes.
Is the universe like a hologram? Quantum theory suggests that information is not lost inside a black hole but instead is encoded around it like a hologram?a phenomenon that may characterize the universe as a whole!
Indeed, the idea that the universe itself has properties similar to black holes shows that these objects play a pivotal role at all scales: from the truly cosmic to the subatomic realm, where theory suggests the existence of mini-black holes that may have been created in the aftermath of the big bang and that could be produced in the latest generation of particle accelerators.
Nearly everyone has heard of black holes, but few people outside of complex scientific fields understand their true nature and their implications for our universe. Black Holes Explained finally makes this awe-inspiring cosmological subject graspable, with 12 lavishly illustrated lectures by veteran Great Courses Professor Alex Filippenko, a distinguished astronomer and award-winning teacher at the University of California, Berkeley.
Travel into a Black Hole
No movie, novel, or other fictional treatment of black holes matches Professor Filippenko's absorbing presentation of the actual science behind these amazing objects. In Lectures 8 and 9 he uses computer simulations created by fellow astronomers to conduct a virtual tour around and into a supermassive black hole, and then through a wormhole to another universe. Among the features you investigate are these:
Einstein ring: As you approach a black hole, the starlight behind it spectacularly bends in a kaleidoscopic effect called gravitational lensing. This phenomenon can produce a series of halos known as Einstein rings.
Photon sphere: Closer to a black hole, you come to a zone where an object must orbit at the speed of light to avoid falling in. Here, light can move in circular orbits and, in principle, you can look forward and see the back of your head.
Event horizon: Continuing your plunge, you reach a boundary called the event horizon. Once you cross it, you can't return. Anyone watching from outside sees time come to a standstill, as you appear to stop and motionlessly fade from view.
Singularity: After crossing the event horizon, you are only a minute away from the singularity, the hypothetical point of infinite density. Powerful tidal forces squeeze and stretch your body, until you are ultimately crushed to oblivion.
Mission Invisible
Recently elected to the prestigious National Academy of Sciences, Dr. Filippenko has devoted much of his research career to black holes, discovering some of the best evidence for the existence of stellar-mass black holes in the Milky Way Galaxy, and participating in studies of supermassive black holes using the Hubble Space Telescope.
Drawing on extensive graphics, including hundreds of stunning astronomical images, Dr. Filippenko shows how scientists have been able to read the evidence to surmise a great deal about objects that are inherently invisible. Among the most dramatic clues are high-energy beams of radiation that were first detected by spy satellites in the 1960s. These powerful "gamma-ray bursts" were long a mystery, but they are now thought to be the dying gasps of massive stars in distant galaxies, collapsing to form black holes.
Dr. Filippenko also dispels several myths about black holes, such as that they are "cosmic vacuum cleaners," drawing in matter from afar with irresistible force. In fact, if the sun were compressed to form a black hole, there would be no effect on the orbits of the planets. Similarly, fears that mini-black holes created by particle accelerators will grow and devour the Earth have no basis in physics.
In popular usage, a black hole is a place of utter emptiness. But in this engaging course, you learn about how there is much more to them than that. Astronomers have brought black holes out of the shadows to reveal that they are a widespread and vital phenomenon in the universe with unexpected implications for all scales of reality. Black holes are intriguingly counterintuitive, gratifyingly comprehensible, and surprisingly relevant to our overall understanding of the universe?as you will discover in Black Holes Explained.
About Your Professor
Dr. Alex Filippenko is the Richard and Rhoda Goldman Distinguished Professor in the Physical Sciences at the University of California, Berkeley. He received his bachelor's degree in Physics from the University of California, Santa Barbara, and earned his doctorate in Astronomy from the California Institute of Technology.
Professor Filippenko's research accomplishments are among the most highly cited in his field and in 2009 earned him election to the National Academy of Sciences. Also lauded as a teacher, he has garnered many awards at Berkeley, including the Donald S. Noyce Prize and the Distinguished Teaching Award, and he was voted Best Professor six times in student polls. At the end of 2006, he was honored as the Doctoral and Research Universities National Professor of the Year by the Carnegie Foundation for the Advancement of Teaching and the Council for Advancement and Support of Education.
Dr. Filippenko is coauthor of The Cosmos: Astronomy in the New Millennium, winner of the 2001 Texty Excellence Award for best new textbook in the physical sciences. He also received the 2004 Carl Sagan Prize for Science Popularization, has been in numerous television documentaries, and has delivered more than 500 public lectures on astronomy.
This course features state-of-the-art animations, models, graphs and tables, illustrations, and breathtaking photographs?many collected from NASA and professional astronomers.
Course Lecture Titles
A General Introduction to Black Holes
The Violent Deaths of Massive Stars
Gamma-Ray Bursts?The Birth of Black Holes
Searching for Stellar-Mass Black Holes
Monster of the Milky Way and Other Galaxies
Quasars?Feasting Supermassive Black Holes
Gravitational Waves?Ripples in Space-Time
The Wildest Ride in the Universe
Shortcuts through the Universe and Beyond?
Stephen Hawking and Black Hole Evaporation
Black Holes and the Holographic Universe
Black Holes and the Large Hadron Collider
MU
- Code:
http://www.megaupload.com/?d=98WEQ025
http://www.megaupload.com/?d=VR5FR7GI
http://www.megaupload.com/?d=B9U9LX10
http://www.megaupload.com/?d=VMELC8BT
http://www.megaupload.com/?d=3A4E4R4B
http://www.megaupload.com/?d=KT65QACU
http://www.megaupload.com/?d=NFMAZ5WY
http://www.megaupload.com/?d=3E5KISXT
http://www.megaupload.com/?d=3XVC4F6W
http://www.megaupload.com/?d=VLJ9L6EA
http://www.megaupload.com/?d=ZE492TV9
http://www.megaupload.com/?d=R1IN1C68
http://www.megaupload.com/?d=3KUTCZJX
http://www.megaupload.com/?d=89TKU87L
RS
- Code:
http://rapidshare.com/files/374261314/BHE.part01.rar
http://rapidshare.com/files/374251491/BHE.part02.rar
http://rapidshare.com/files/374246151/BHE.part03.rar
http://rapidshare.com/files/374245450/BHE.part04.rar
http://rapidshare.com/files/374245444/BHE.part05.rar
http://rapidshare.com/files/374245738/BHE.part06.rar
http://rapidshare.com/files/379022654/BHE.part07.rar
http://rapidshare.com/files/374245871/BHE.part08.rar
http://rapidshare.com/files/374245717/BHE.part09.rar
http://rapidshare.com/files/374245430/BHE.part10.rar
http://rapidshare.com/files/374245374/BHE.part11.rar
http://rapidshare.com/files/374245768/BHE.part12.rar
http://rapidshare.com/files/374246121/BHE.part13.rar
http://rapidshare.com/files/374245868/BHE.part14.rar
Pass if needed
- Code:
ants
Links are interchangeable.
Enjoy!
Admin- Admin
- Đánh giá tốt! : 7
Tổng số bài gửi : 10417
Birthday : 09/10/1979
Tuổi : 44
Địa chỉ: : Phú Yên
Điện thoại: : Mobile: (84) 0985 017 089
Điểm : 61295
Ngày đăng ký : 13/10/2007 -
Similar topics» Black Holes Explained & Understanding the Universe: An I
» David X - The Rules Explained - KL
» David X - The Rules Explained
» David X - The Rules Explained - KL
» David X - The Rules Explained
Trang 1 trong tổng số 1 trang
Permissions in this forum:
Bạn không có quyền trả lời bài viết
» Hộp đựng đa năng trong phòng tắm và các đồ dụng tiện llợi khác
» gel bôi trơn ấm áp warm lovin
» màng film tránh thai vcf dành cho chị em
» màng film tránh thai vcf dành cho chị em
» stud 100 khẳng định đẳng cấp phái mạnh
» Lover aider máy mát xa dành cho nữ
» cung cấp máy ép dĩa chất lượng
» Máy in hình lên ly
» Máy in hình lên áo
» trang trí cây thông noel ở vinh,cho thuê cây thông noel ở vinh,chuyển quà noel ở vinh
» Máy in hạn sử dụng DMJ-B chính hãng, giá sốc
» Dạy cắm hoa chuyên nghiệp,dạy cắm hoa nghệ thuật,dạy cắt tỉa của quả ở T.p Vinh Nghệ An
» công ty Yên Phát chuyên phân phối, lắp đặt camera chính hãng giá rẻ nhất miền Bắc.
» HOT! Chung cư mini Xuân Đỉnh ở ngay giá chỉ từ 690 triệu 1 căn