UNT Theses and Dissertations - 2 Matching Results

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A Determination of the Fine Structure Constant Using Precision Measurements of Helium Fine Structure

Description: Spectroscopic measurements of the helium atom are performed to high precision using an atomic beam apparatus and electro-optic laser techniques. These measurements, in addition to serving as a test of helium theory, also provide a new determination of the fine structure constant α. An apparatus was designed and built to overcome limitations encountered in a previous experiment. Not only did this allow an improved level of precision but also enabled new consistency checks, including an extr… more
Date: August 2010
Creator: Smiciklas, Marc
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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EEG, Alpha Waves and Coherence

Description: This thesis addresses some theoretical issues generated by the results of recent analysis of EEG time series proving the brain dynamics are driven by abrupt changes making them depart from the ordinary Poisson condition. These changes are renewal, unpredictable and non-ergodic. We refer to them as crucial events. How is it possible that this form of randomness be compatible with the generation of waves, for instance alpha waves, whose observation seems to suggest the opposite view the brain is … more
Date: May 2010
Creator: Ascolani, Gianluca
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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