Browsing Department of Physics by Author "Amarasinghe, D.I."

Browsing Department of Physics by Author "Amarasinghe, D.I."

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  • Analysis of tortuosity of long laboratory sparks 
    Amarasinghe, D.I.; Sonnadara, D.U.J. (2005)
    Channel tortuosity of 50 cm long laboratory sparks were measured by processing a series of images taken by 3 cameras placed at a radial distance of 200 cm from the sparks with the angle between two cameras being 120. The ...
  • Fractal properties of long sparks 
    Amarasinghe, D.I.; Sonnadara, D.U.J. (2006)
    Two methods have been utilized to study the fractal nature of long laboratory sparks. The first method based on a statistical technique use the variation in angle between consecutive steps to deduce the fractal nature in ...
  • Optical signatures of electrical breakdown trajectories in air 
    Amarasinghe, D.I.; Sonnadara, D.U.J. (2005)
    Optical signatures of electrical breakdown trajectories in air were investigated by utilizing image processing techniques on a set of photographic images. The experimental technique consisted of capturing the photographic ...
  • Stochastic modelling of dielectric breakdown 
    Amarasinghe, D.I.; Sonnadara, D.U.J. (2006)
    Using a 2D stochastic dielectric breakdown model, patterns of lightning discharges and surface discharges were studied. The model based on a Laplacian growth, develops the breakdown process stepwise, choosing one lattice ...
  • Surface colour variation of Papaya fruits with maturity 
    Amarasinghe, D.I.; Sonnadara, D.U.J. (2009)
    Surface colour considered as a quality parameter change with the maturity of fruits. Many unripe fruits initially show greenish surface colour which gradually changes to yellow colour when they mature. The change of ...

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