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   <title><![CDATA[About.com Physics: What's Hot Now]]></title>
   <link>http://physics.about.com/</link>
   
   <description>These articles that had the largest increase in popularity over the last week</description>
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   <dc:date>2012-05-20T11:04:32Z</dc:date>

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         <title><![CDATA[Quantum Levitation]]></title>
         <link>http://physics.about.com/od/quantumphysics/f/QuantumLevitation.htm</link>
         <description><![CDATA[It has long been a dream of science (or, at least, science fiction) to create machines that could fly and levitate. This can be done with magnets, of course, but takes a great deal of energy. In recent years, the new phenomenon of quantum levitation has given some possible hope that levitation may be more practical than previously believed.]]></description>
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         <dc:subject>education</dc:subject>
         <dc:date>2012-05-20T11:04:32Z</dc:date>
         </item>
         
         <item>
         <title><![CDATA[Michio Kaku]]></title>
         <link>http://physics.about.com/od/michiokaku/p/michiokakubio.htm</link>
         <description><![CDATA[Physicist & science popularizer Michio Kaku is a known face from television and voice from radio, where he presents physics concepts to a broad lay audience.]]></description>
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         <dc:subject>education</dc:subject>
         <dc:date>2012-05-20T11:04:32Z</dc:date>
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         <title><![CDATA[The Scientific Method]]></title>
         <link>http://physics.about.com/od/toolsofthetrade/a/scimethod.htm</link>
         <description><![CDATA[This introduction illuminates the main principles of the scientific method, as well as hypothesis creation and testing procedures that are used in executing the scientific method.]]></description>
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         <dc:subject>education</dc:subject>
         <dc:date>2012-05-20T11:04:32Z</dc:date>
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         <item>
         <title><![CDATA[Kepler&#039;s Laws]]></title>
         <link>http://physics.about.com/od/astronomy/p/keplerlaws.htm</link>
         <description><![CDATA[Kepler's Laws describe, in three concise rules, the motion of orbital bodies in the solar system.]]></description>
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         <dc:subject>education</dc:subject>
         <dc:date>2012-05-20T11:04:32Z</dc:date>
         </item>
         
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         <title><![CDATA[Rubber Band Flying Machines]]></title>
         <link>http://physics.about.com/od/physicsexperiments/gr/RubberBandFlyingMachines.htm</link>
         <description><![CDATA[This book and kit contains all the instructions and parts needed to construct three different flying machines that are powered by rubber bands. ]]></description>
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         <dc:subject>education</dc:subject>
         <dc:date>2012-05-20T11:04:32Z</dc:date>
         </item>
         
         <item>
         <title><![CDATA[Mad Scientist Costume]]></title>
         <link>http://physics.about.com/od/halloweenphysics/qt/madscientist.htm</link>
         <description><![CDATA[Learn how to create a great mad scientist costume.]]></description>
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         <dc:subject>education</dc:subject>
         <dc:date>2012-05-20T11:04:32Z</dc:date>
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         <title><![CDATA[Sir Isaac Newton]]></title>
         <link>http://physics.about.com/od/sirisaacnewton/p/newton.htm</link>
         <description><![CDATA[Sir Isaac Newton is one of the most significant physicists in western history.  Considered the founder of classical physics, he took the disparate concepts that existed at his time and brought them together into a cohesive field of study.]]></description>
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         <dc:subject>education</dc:subject>
         <dc:date>2012-05-20T11:04:32Z</dc:date>
         </item>
         
         <item>
         <title><![CDATA[Physics of the Impossible]]></title>
         <link>http://physics.about.com/od/physicsbooks/gr/impossphysics.htm</link>
         <description><![CDATA[If you are interested in these "impossible" concepts from the realm of science fiction - invisibility,]]></description>
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         <dc:subject>education</dc:subject>
         <dc:date>2012-05-20T11:04:32Z</dc:date>
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         <item>
         <title><![CDATA[Albert Einstein Books]]></title>
         <link>http://physics.about.com/od/alberteinstein/tp/einsteinbooks.htm</link>
         <description><![CDATA[A list of diverse books that focus on Albert Einstein's life and work.]]></description>
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         <dc:subject>education</dc:subject>
         <dc:date>2012-05-20T11:04:32Z</dc:date>
         </item>
         
         <item>
         <title><![CDATA[Significant Figures]]></title>
         <link>http://physics.about.com/od/classroomphysics/a/SigFigs.htm</link>
         <description><![CDATA[When measuring physical quantities, scientists have to keep track of their level of precision.  This article will discuss how scientists use significant figures to do just that, and how you can use significant figures without error in your work.  It also discusses the role of scientific notation in making large and small numbers manageable.]]></description>
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         <dc:subject>education</dc:subject>
         <dc:date>2012-05-20T11:04:32Z</dc:date>
         </item>
         
         <item>
         <title><![CDATA[Why Study Physics?]]></title>
         <link>http://physics.about.com/od/classroomphysics/f/whyphysics.htm</link>
         <description><![CDATA[Why should you study physics?  What is the use of a physics education?  If you aren't going to become a physicist, you may have questions such as these ... but there are good reasons for everyone to study physics.]]></description>
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         <dc:subject>education</dc:subject>
         <dc:date>2012-05-20T11:04:32Z</dc:date>
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         <item>
         <title><![CDATA[The Fields of Physics]]></title>
         <link>http://physics.about.com/od/physics101thebasics/f/FieldsPhysics.htm</link>
         <description><![CDATA[An overview of the various fields of physics.]]></description>
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         <dc:subject>education</dc:subject>
         <dc:date>2012-05-20T11:04:32Z</dc:date>
         </item>
         
         <item>
         <title><![CDATA[Bell&#039;s Theorem]]></title>
         <link>http://physics.about.com/od/quantuminterpretations/f/bellstheorem.htm</link>
         <description><![CDATA[Bell's Theorem is the theorem in quantum physics which helped solidify the idea that the interactions in quantum physics between entangled particles are instantaneous and non-local in nature.]]></description>
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         <dc:subject>education</dc:subject>
         <dc:date>2012-05-20T11:04:32Z</dc:date>
         </item>
         
         <item>
         <title><![CDATA[The Big Bang]]></title>
         <link>http://physics.about.com/od/astronomy/f/BigBang.htm</link>
         <description><![CDATA[One of the most impressive theories of the 20th century, the Big Bang explains the origins of the universe ... at least up to a point.  Find out what the theory actually says, what it does not say, and what it may or may not say.]]></description>
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         <dc:subject>education</dc:subject>
         <dc:date>2012-05-20T11:04:32Z</dc:date>
         </item>
         
         <item>
         <title><![CDATA[Newton&#039;s Laws of Motion]]></title>
         <link>http://physics.about.com/od/classicalmechanics/a/lawsofmotion_2.htm</link>
         <description><![CDATA[Newton's first law of motion describes the concept of inertia, which is that a motion without a force acting upon it will not change its motion.]]></description>
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         <dc:subject>education</dc:subject>
         <dc:date>2012-05-20T11:04:32Z</dc:date>
         </item>
         
         <item>
         <title><![CDATA[Dimensional Analysis]]></title>
         <link>http://physics.about.com/od/classroomphysics/qt/quickunits.htm</link>
         <description><![CDATA[Dimensional analysis is a process by which you can use the units of certain values to help figure out how to achieve the solution you need.  Learn how to use dimensional analysis to help you solve physics problems.]]></description>
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         <dc:subject>education</dc:subject>
         <dc:date>2012-05-20T11:04:32Z</dc:date>
         </item>
         
         <item>
         <title><![CDATA[A photograph of Albert Einstein riding his bicycle in Santa Barbara.]]></title>
         <link>http://physics.about.com/od/alberteinstein/ig/Albert-Einstein-photos/Einstein-on-a-bike.htm</link>
         <description><![CDATA[A photograph of Albert Einstein riding his bicycle in Santa Barbara.]]></description>
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         <dc:subject>education</dc:subject>
         <dc:date>2012-05-20T11:04:32Z</dc:date>
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         <item>
         <title><![CDATA[Laser]]></title>
         <link>http://physics.about.com/od/physicsitol/g/laser.htm</link>
         <description><![CDATA[definition of a laser]]></description>
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         <dc:subject>education</dc:subject>
         <dc:date>2012-05-20T11:04:32Z</dc:date>
         </item>
         
         <item>
         <title><![CDATA[Niels Bohr]]></title>
         <link>http://physics.about.com/od/nielsbohr/p/bohr1.htm</link>
         <description><![CDATA[Information about the physicist Niels Bohr, who was key in the development of quantum physics.  Bohr devised the simplified Bohr model of the hydrogen atom.  He was central to the development of the Copenhagen interpretation of quantum physics.]]></description>
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         <dc:subject>education</dc:subject>
         <dc:date>2012-05-20T11:04:32Z</dc:date>
         </item>
         
         <item>
         <title><![CDATA[Types of Parallel Universes]]></title>
         <link>http://physics.about.com/od/astronomy/f/ParallelUniverseTypes.htm</link>
         <description><![CDATA[Physicists often talk about parallel universes, but what exactly does this mean? Are there different types of parallel universes? What are they?]]></description>
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         <dc:subject>education</dc:subject>
         <dc:date>2012-05-20T11:04:32Z</dc:date>
         </item>
         
         <item>
         <title><![CDATA[Force]]></title>
         <link>http://physics.about.com/od/glossary/g/force.htm</link>
         <description><![CDATA[Definition of force, how force applies to physics]]></description>
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         <dc:subject>education</dc:subject>
         <dc:date>2012-05-20T11:04:32Z</dc:date>
         </item>
         
         <item>
         <title><![CDATA[Physics Myths]]></title>
         <link>http://physics.about.com/od/physicsmyths/tp/physicsmyths.htm</link>
         <description><![CDATA[A list of popular physics myths.]]></description>
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         <dc:subject>education</dc:subject>
         <dc:date>2012-05-20T11:04:32Z</dc:date>
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         <item>
         <title><![CDATA[Entropy]]></title>
         <link>http://physics.about.com/od/glossary/g/entropy.htm</link>
         <description><![CDATA[definition of entropy]]></description>
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         <dc:subject>education</dc:subject>
         <dc:date>2012-05-20T11:04:32Z</dc:date>
         </item>
         
         <item>
         <title><![CDATA[Induction]]></title>
         <link>http://physics.about.com/od/physicsetoh/g/induction.htm</link>
         <description><![CDATA[definition of electromagnetic induction]]></description>
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         <dc:subject>education</dc:subject>
         <dc:date>2012-05-20T11:04:32Z</dc:date>
         </item>
         
         <item>
         <title><![CDATA[Condensation]]></title>
         <link>http://physics.about.com/od/glossary/g/condensation.htm</link>
         <description><![CDATA[definition of condensation]]></description>
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         <dc:subject>education</dc:subject>
         <dc:date>2012-05-20T11:04:32Z</dc:date>
         </item>
         
         <item>
         <title><![CDATA[Unified Field Theory]]></title>
         <link>http://physics.about.com/od/quantumphysics/f/uft.htm</link>
         <description><![CDATA[: What is Unified Field Theory? : Albert Einstein coined the term "Unified Field Theory," which describes]]></description>
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         <dc:subject>education</dc:subject>
         <dc:date>2012-05-20T11:04:32Z</dc:date>
         </item>
         
         <item>
         <title><![CDATA[Blackbody Radiation]]></title>
         <link>http://physics.about.com/od/quantumphysics/a/blackbody_2.htm</link>
         <description><![CDATA[Research in blackbody radiation created a major dilemma for classical physics.  The problem was resolved by Max Planck in 1900 by introducing the concepts which laid the foundation for all of quantum mechanics.]]></description>
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         <dc:subject>education</dc:subject>
         <dc:date>2012-05-20T11:04:32Z</dc:date>
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         <item>
         <title><![CDATA[The Physics of Christianity]]></title>
         <link>http://physics.about.com/od/physicsbooks/gr/PhysChrist.htm</link>
         <description><![CDATA[A review of The Physics of Christianity by controversial Tulane University physicist Frank J. Tipler.  In this book, Tipler outlines an interpretation of quantum physics which could theoretically be consistent with a literal interpretation of Christian doctrine, and would explain everything from the virgin birth to the existence of miracles, and the ultimate goal of mankind.]]></description>
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         <dc:subject>education</dc:subject>
         <dc:date>2012-05-20T11:04:32Z</dc:date>
         </item>
         
         <item>
         <title><![CDATA[Work]]></title>
         <link>http://physics.about.com/od/glossary/g/work.htm</link>
         <description><![CDATA[Definition of work]]></description>
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         <dc:subject>education</dc:subject>
         <dc:date>2012-05-20T11:04:32Z</dc:date>
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