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The Elegant Universe
A three hour program in three parts for television broadcast in late 2003 on the PBS series NOVA.
The Elegant Universe
Superstrings, Hidden Dimensions, Parallel Universes and the Quest for the Ultimate Theory
In theoretical physics, M-theory is an extension of string theory in which 11 dimensions are identified. Because the dimensionality exceeds the dimensionality of five superstring theories in 10 dimensions, it is believed that the 11-dimensional theory unifies all string theories (and supersedes them). Though a full description of the theory is not yet known, the low-entropy dynamics are known to be supergravity interacting with 2- and 5-dimensional membranes.
This idea is the unique supersymmetric theory in eleven dimensions, with its low-entropy matter content and interactions fully determined, and can be obtained as the strong coupling limit of type IIA string theory because a new dimension of space emerges as the coupling constant increases.
Drawing on the work of a number of string theorists (including Ashoke Sen, Chris Hull, Paul Townsend, Michael Duff and John Schwarz), Edward Witten of the Institute for Advanced Study suggested its existence at a conference at USC in 1995, and used M-theory to explain a number of previously observed dualities, sparking a flurry of new research in string theory called the second superstring revolution.
In the early 1990s, it was shown that the various superstring theories were related by dualities, which allow physicists to relate the description of an object in one super string theory to the description of a different object in another super string theory. These relationships imply that each of the super string theories is a different aspect of a single underlying theory, proposed by Witten, and named "M-theory".
Originally the letter M in M-theory was taken from membrane, a construct designed to generalize the strings of string theory. However, as Witten was more skeptical about membranes than his colleagues, he opted for "M-theory" rather than "Membrane theory". Witten has since stated that the interpretation of the M can be a matter of taste for the user of the word "M-theory".
In M-theory we are the shadows on the wall. The `room' is some larger, five-dimensional spacetime and our four-dimensional world is just the boundary of this larger space. If we try to move away from the wall, we are moving into an extra dimension of space - a fifth dimension. In fact, people have recently been trying to think of ways in which we might actually experimentally `probe' this fifth dimension.
The World First Time Machine
Playlist: http://www.youtube.com/watch?v<wbr>=w_xhYZonaTQ&feature=PlayList&<wbr>p=FBF3D07880D5961E&index=0&pla<wbr>ynext=1
A TLC documentary exploring the possibilities of time travel
Ronald L. Mallett is a full professor of physics at the University of Connecticut.
For quite some time, Ronald Mallett has been working on plans for a time machine. This technology would be based upon a ring laser's properties within the context of Einstein's Theory of Relativity. Mallett first argued that the ring laser would produce a limited amount of frame-dragging which might be measured experimentally, saying
"In Einstein's General Theory of Relativity, both matter and energy can create a gravitational field. This means that the energy of a light beam can produce a gravitational field. My current research considers both the weak and strong gravitational fields produced by a single continuously circulating unidirectional beam of light. In the weak gravitational field of a unidirectional ring laser, it is predicted that a spinning neutral particle, when placed in the ring, is dragged around by the resulting gravitational field."
In a later paper, he argued that at sufficient energies, the circulating laser might produce not just frame-dragging but also closed timelike curves, allowing time travel into the past
For the strong gravitational field of a circulating cylinder of light, he has found new exact solutions of the Einstein field equations for the exterior and interior gravitational fields of the light cylinder. The exterior gravitational field is shown to contain closed timelike lines.
The presence of closed timelike lines indicates the possibility of time travel into the past. This creates the foundation for a time machine based on a circulating cylinder of light.
Funding for his program, now known as The Space-time Twisting by Light (STL) project, is progressing. Full details on the project, Mallett's theories, a list of upcoming public lectures and links to popular articles on his work can be found at the Professor's UConn web page, and an illustration showing the concept on which Mallett has designed the time machine can be seen on a Geocities webpage.
He also wrote a book entitled, Time Traveler: A Scientist's Personal Mission to Make Time Travel a Reality, co-written with New York Times best-selling author Bruce B. Henderson, that was first published in 2006. In June 2008, motion picture director Spike Lee's production company announced it had acquired the film rights to Mallett's book. Lee is co-writing the movie script and directing the picture.
Ronald L. Mallett
Ph.D., Professor of Physics
University of Connecticut
http://www.phys.uconn.edu/~mal<wbr>lett/main/main.htm
Atom BBC Illusion of Reality
In this three-part documentary series, Professor Jim Al-Khalili tells the story of one of the greatest scientific discoveries ever: that the material world is made up of atoms.
3. THE ILLUSION OF REALITY
Al-Khalili discovers that there might be parallel universes in which different versions of us exist, and finds out that empty space isnt empty at all, but seething with activity
Science, parapsychology and taboo
Also watch this video (its really great):
"Science and the taboo of psi" with Dean Radin
http://www.youtube.com/watch?v<wbr>=qw_O9Qiwqew&hl=da
The term Psi is used to define processes or effects associated with cognitive or physiological activity that fall outside of conventional scientific boundaries (ESP, for example).
Traditionally the term has had two sub-categories.
Psi-Gamma - Pertaining to paranormal cognition (ESP, remote viewing, etc.)
Psi-Kappa - Pertaining to paranormal action (psychokinesis, etc.)
The statistics showing that Panodil kills pain is much weaker than the extensive statistics proving the existence of Psi. Yet the critique that any scientific study of the psy phenomenon meets is enormous (unless the conclusion is that psi is not real).
Why is that? Simply because psy is a taboo.
Dean Radin, Ph.D and his colleges have established with the same methods that are used in other fields of science (actually even more thoroughly), that the human mind can influence random systems, that Remote Perception and so on.
Here you can hear him describing his research and addressing the taboo.
"Science and the taboo of psi" with Dean Radin
http://www.youtube.com/watch?v<wbr>=qw_O9Qiwqew&hl=da
Dean Radin (born February 29, 1952) is a researcher and author in the field of parapsychology. He is Senior Scientist at the Institute of Noetic Sciences, in Petaluma, California, USA, on the Adjunct Faculty at Sonoma State University, on the Distinguished Consulting Faculty at Saybrook Graduate School and Research Center, and former, four-time President of the Parapsychological Association.
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Quantum mechanics - introduction
Most people (most physics as well), know something about quantum physics. But we seem to completely ignore the philosophical implications it has.
In quantum mechanics, the double-slit experiment (often referred to as Young's experiment) demonstrates the inseparability of the wave and particle natures of light and other quantum particles.
In other words, this experiment shows us the implications of the wave-particle nature of matter: That we cannot ignore the wave-nature - since it is what decides the distribution of "particles" we observe.
So what does this mean?
It simply means that there is something "out of this world" (1). Something we cannot measure directly and therefore cannot know - that determines how the world looks, and keeps everything in place. Without this unknown - everything would disappear in a flash (2).
(1) Out of this world for many reasons, but to name two: Firstly because the wavefunction is in R^(3/2) space (before it is normalized), and secondly because we cannot measure it directly (the measurement problem). You could argue that it (the normalized function) is something. Namely probability. So I ask you: Is probability something (physical) or is it a mathematical concept?
(2) Everything would implode for many reasons, but basically because the electron would be dragged into the proton by the electric force between them if it was not kept away by its wave-nature (orbitals are in one cense standing probability waves)
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