TY - JOUR TI - Fractal harmonic law and waterproof/dustproof AU - Kong Hai-Yan AU - Chen Rou-Xi AU - He Ji-Huan JN - Thermal Science PY - 2014 VL - 18 IS - 5 SP - 1463 EP - 1467 PT - Article AB - The fractal harmonic law admits that the friction between the pure water and the moving surface is the minimum when fractal dimensions of water in Angstrom scale are equal to fractal dimensions of the moving surface in micro scale. In the paper, the fractal harmonic law is applied to demonstrate the mechanism of waterproof/ dustproof. The waterproof phenomenon of goose feathers and lotus leaves is illustrated to verify our results and experimental results agree well with our theoretical analysis.