American Journal of Modern Physics

Volume 6, Issue 5, September 2017

  • Characteristic Time of Diffusive Mixing in Cube with Reflecting Edges

    Gurami Tsitsiashvili

    Issue: Volume 6, Issue 5, September 2017
    Pages: 81-87
    Received: Jun. 30, 2017
    Accepted: Jul. 11, 2017
    Published: Jul. 31, 2017
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    Abstract: V. V. Uchaikin suggested a mathematical model of an anomalous diffusion in a space. These model origins in an investigation of processes in complex systems with variable structure: glasses, liquid crystals, biopolymers, proteins and a turbulence in a plasma. Here a coordinate of diffusing particle has stable distribution and so its density satisfie... Show More
  • Comment on Half-Integer Quantum Numbers for the Total Angular Momentum of Photons in Light Beams with Finite Lateral Extensions

    Manfred Fähnle

    Issue: Volume 6, Issue 5, September 2017
    Pages: 88-90
    Received: Jul. 05, 2017
    Accepted: Jul. 20, 2017
    Published: Aug. 15, 2017
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    Abstract: Recently the spectacular result was derived quantum mechanically that the total angular momentum of photons in light beams with finite lateral extensions can have half-integer quantum numbers. In a circularly polarized Gauss light beam it is half of the spin angular momentum which it would have in a respective infinitely extended wave. In another p... Show More
  • Bifurcation of Sound Waves in a Disturbed Fluid

    Zuwen Qian

    Issue: Volume 6, Issue 5, September 2017
    Pages: 91-95
    Received: Jul. 12, 2017
    Accepted: Jul. 19, 2017
    Published: Aug. 15, 2017
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    Abstract: An equation that describes the wave propagation in the disturbed medium was deduced from the Lighthill’s equation. The so-called perturbation-cumulative approximation was suggested to solve this equation and the period-doubling bifurcation solutions were given. The results obtained in this paper helps to provide insights to the mechanism of the tur... Show More
  • Refinement and Supplement of Phenomenology of Thermoelectricity

    S. V. Ordin

    Issue: Volume 6, Issue 5, September 2017
    Pages: 96-107
    Received: Jun. 15, 2017
    Accepted: Jun. 26, 2017
    Published: Aug. 28, 2017
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    Abstract: Phenomenology of nonequilibrium thermodynamics based on independent thermodynamic forces with kinetic coefficients independent of the applied forces. Whereas the traditional thermoelectric phenomenology is based on the experimentally measured material parameters of the medium. At the same time, their historically emerging definitions have neither m... Show More
  • Performance Evaluation of Pyrolysis Cookstove Using Water Boiling Test

    Teka Tesfaye Mengesha, Ancha Venkata Ramayya

    Issue: Volume 6, Issue 5, September 2017
    Pages: 108-116
    Received: Mar. 20, 2017
    Accepted: Apr. 19, 2017
    Published: Sep. 12, 2017
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    Abstract: For domestic energy – fuel sources biomass such as wood, animal dung and agricultural waste that are normally burned in traditional stove is used by the developing world. Diverse biomass resource is found in Ethiopia which can be used for energy through pyrolysis cook stove co-producing biochar. Specifically, coffee husks are the major solid residu... Show More