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Temporal scaling laws involving noninteger exponents have appeared in the physics of many systems, including charge transport in xerographic films (1-4), electron-hole recombination in amorphous materials (5-7) and other heterogeneous kinetics (8), dielectric, magnetic, and mechanical relaxation in glassy materials (9-12), and in the time-dependent reactivity of radiation-induced chemistry in frozen liquids (13). While at first quite puzzling, all of these complex phenomena have been explained using a concept called fractal time to describe the transport of charges and defects in these systems. Fractals are usually considered to be self-similar geo metric objects in space with features on an infinite number of scales. Fractal time describes highly intermittent self-similar temporal behavior that does not possess a characteristic time scale. If the average time of an event were finite, then this would provide a time scale …