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Quantum Mechanics

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Quantum Gravity
String Theory
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Multimedia
  1. Fabric of the Cosmos (PBS)
      "Acclaimed physicist Brian Greene reveals a mind-boggling reality beneath the surface of our everyday world." 12-11

News
  1. The World May Be a Giant Hologram (NewScientist.com)
      "The holograms you find on credit cards and banknotes are etched on two-dimensional plastic films. When light bounces off them, it recreates the appearance of a 3D image. In the 1990s physicists Leonard Susskind and Nobel prizewinner Gerard 't Hooft suggested that the same principle might apply to the universe as a whole. Our everyday experience might itself be a holographic projection of physical processes that take place on a distant, 2D surface."

      "The "holographic principle" challenges our sensibilities. It seems hard to believe that you woke up, brushed your teeth and are reading this article because of something happening on the boundary of the universe. No one knows what it would mean for us if we really do live in a hologram, yet theorists have good reasons to believe that many aspects of the holographic principle are true." 02-09

Papers
  1. Hawking: The Nature of Reality (Time.com)
      "Though realism may be a tempting viewpoint, what we know about modern physics makes it a difficult one to defend. For example, according to the principles of quantum physics, which is an accurate description of nature, a particle has neither a definite position nor a definite velocity unless and until those quantities are measured by an observer. In fact, in some cases individual objects don't even have an independent existence but rather exist only as part of an ensemble of many." 09-10

  2. Planck Scale (Wikipedia.org)
      "The Planck units are often semi-humorously referred to by physicists as 'God's units'. They eliminate anthropocentric arbitrariness from the system of units: some physicists believe that an extra-terrestrial intelligence might be expected to use the same system."

      "At the 'Planck scales' in length, time, density, or temperature, one must consider both the effects of quantum mechanics and general relativity. Unfortunately this requires a theory of quantum gravity which does not yet exist."

      "Most of the Planck units are either too small or too large for practical use, unless prefixed with large powers of ten." 01-06

  3. Quantum Computers (Nature - Ball)
      Explains an attempt to develop computers that operate at the quantum physics level. College Level. 5-01

  4. Quantum Mechanics (Wikipedia.org)
      "Quantum mechanics is a physical theory which, for very small objects such as atoms, produces results that are very different and much more accurate than those of classical mechanics. It is the underlying framework of many fields of physics and chemistry, including condensed matter physics, quantum chemistry, and particle physics." 10-04

  5. Quantum Mechanics (Wikipedia.org)
      Provides 99 articles. 10-04

  6. Quantum Mechanics (Wikipedia.org)
      "Quantum mechanics is a fundamental physical theory that replaces Newtonian mechanics and classical electromagnetism at the atomic and subatomic levels and is the underlying framework of many fields of physics and chemistry, including condensed matter physics, quantum chemistry, and particle physics. Along with general relativity, it is one of the pillars of modern physics." 01-06

  7. Quantum Mechanics News (Nature - Ball)
      Provides the results of a recent study to view decoherence, the process by which two or more results of an event are narrowed to one at the atomic level. The whole issue violates common sense. In quantum mechanics, a cat could simultaneously be killed by an event and not killed by the event--both realities can occur simultaneously and then one of the results "melts" into non-existance. 1-00

  8. Scientists Propose Interaction of Parllel Worlds (ScienceDaily.com)
      "Academics are challenging the foundations of quantum science with a radical new theory on parallel universes. Scientists now propose that parallel universes really exist, and that they interact. They show that such an interaction could explain everything that is bizarre about quantum mechanics." 11-14

  9. Understanding the Universe (Time.com)
      "It turns out that Brian Greene isn't all that different from you or me. Sure, he's a top-flight theoretical physicist on the faculty of the ultra-prestigious Columbia University. And yes, he specializes in string theory, which uses such advanced and difficult math that even many physicists can't follow it. In one crucial way, however, Greene really is like the rest of us."

      "In a nation in which so many people deny evolution and think vaccines cause rather than prevent disease, Greene's got a big job ahead of him. But if he keeps churning out compelling video like The Fabric of the Cosmos, he might actually get people to understand at least a little bit of modern physics and a bigger bit of the world it makes possible." 12-11

  10. Witten, Edward - Profile (BBC News)
      Known for his contributions to the "Theory of Everything" which ties quantum mechanics, the world of the very small to relativity, the world of the very large. His contributions to superstring theory is particularly noted. He has achieved "the highest honour that a mathematician can receive, namely a Fields Medal." 11-03

   
   


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