Monday, September 7, 2015

The Elegant Universe - Post 3

     The conflicts between Relativity and Quantum mechanics appear nonexistent when applied to the super string theory.  The concept has been in the works for over 45 years, but only in the last decade has it really been examined.  String theory works behind the idea that the mass of elementary particles, and the energy they exert causes Planck strings to vibrate.  Different strings have different Planck tensions, which affect the movements of the particles.  What is most promising about string theory is its compatibility with gravity.  When the gravitational laws of our universe are applied to the Planck tension of the strings, the elementary particles exert the same properties as those found in our own universe.  This truly unifies the large and small scale theories of the universe.
      String Theory, it seems, is too good to be true .There are inconsistencies within the theory that cannot be explained.  The vast number of Planck possibilities, and the small portion that can be applicable has led many physicists to believe it is a dead end, full of too many possibilities to reasonably explore.  However, in the 1990s, it was discovered that, when applied to multiple dimensions, the inconsistencies and incalculable figures were explained, and applicable.  The properties of string theory led scientists to believe that the universe consisted of ten spacial dimensions, and one time dimension.  This discovery stabilized string theory, and surprised physicists.  The only question was, where are the extra dimensions?  This is explained through the analogy of a garden hose.  Brian Greene explains that, from a distance, the hose looks to be a one dimensional line, but up close, it is apparent the hose has three dimensions.  This concept can be applied to string theory when physicists realized that some dimensions may be too small to observe, while others may be much to large.

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