Browsing by Year "1986"

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  • Dharmabandu, J; Dharmaratne, PGR [Article-Full-text]
    Graphite is one of the naturally occuring crystalline forms of Its chief charateristics are its black colour, metallic luster,extreme softness, high conductivity of heat and electrici_ ty, high refractoryness and chemical ...
  • Clarke, AC [Article-Abstract]
    Soviet General Secretary Gorbachev, in his January 1986 speech, expressed a hope that the level of nuclear weapons would before long be greatly reduced. The Soviet Embassy in Sri Lanka invited Arthur C. Clarke to comment ...