American Journal of Modern Physics

Volume 5, Issue 4, July 2016

  • Mass, Momentum, Force and Energy of Photon and Subatomic Particles, and Mechanism of Constant Light Speed Based on Yangton & Yington Theory

    Edward T. H. Wu

    Issue: Volume 5, Issue 4, July 2016
    Pages: 45-50
    Received: 18 April 2016
    Accepted: 27 April 2016
    Published: 07 June 2016
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    Abstract: The meanings of Mass, Momentum, Force and Energy of a substance are clearly defined. Their relationships to each others are discussed. The reasons that a Photon has energy E = hν and momentum P = h/λ are explained. Light travels in vacuum at a constant speed C = 3 x 108 m/sec while converting from Wu’s Particle through the separation and ejection p... Show More
  • Measurements of Indoor Radon Levels and Dose Estimation and Lung Cancer Risk Determination for Workers in Health Centres of Some Towns in the Sudan

    Abd-Elmoniem A. Elzain

    Issue: Volume 5, Issue 4, July 2016
    Pages: 51-57
    Received: 10 March 2016
    Accepted: 12 March 2016
    Published: 29 June 2016
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    Abstract: The indoor radon concentration level and radon effective dose rate were carried out in the health centers of Khartoum, Behri(Khartoum North), Medani and Kassala towns – Sudan, in 222 measurements, using passive integrated solid-state nuclear track devices containing allyl diglycol carbonate plastic detectors. The radon concentration in the correspo... Show More
  • Time, Space, Gravity and Spacetime Based on Yangton & Yington Theory, and Spacetime Shrinkage Versus Universe Expansion

    Edward T. H. Wu

    Issue: Volume 5, Issue 4, July 2016
    Pages: 58-64
    Received: 12 May 2016
    Accepted: 30 May 2016
    Published: 13 July 2016
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    Abstract: Wu’s Particle is proposed as the building block of all Matters, therefore Time and Length can be measured by the Period and Size of the circulation of Wu’s Particle. For a local event, object and process, the Time, Length and Velocity measured by the Period and Size of Wu’s Particle have equal values as that of the identical events, objects and pro... Show More
  • Perturbations in Conduction in Liquids by Plasma Generated by a Pulsed Laser

    Daniela Bertuccelli, Héctor Francisco Ranea-Sandoval

    Issue: Volume 5, Issue 4, July 2016
    Pages: 65-78
    Received: 09 June 2016
    Accepted: 24 June 2016
    Published: 18 July 2016
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    Abstract: The objective of this work is to present the results of measuring the changes in temperature, T, oxidation/reduction potential, ORP, normal electrode potential, NEP, and pH of conducting aqueous mixtures in cells in three situations: with two Copper electrodes, with only one electrode and with none. The situation of two conductors is treated with a... Show More