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  • (chemistry) The process by which the number of particles or photons entering a body of matter is reduced by absorption and scattered radiation. Source: U.S. Nuclear Regulatory Commission
  • (environment) The process by which a compound is reduced in concentration over time, through absorption, adsorption, degradation, dilution, and/or transformation. an also be the decrease with distance of sight caused by attenuation of light by particulate pollution. Source: Terms of the Environment
  • (geology)
  1. A reduction in the amplitude or energy of a signal, such as might be produced by passage through a filter. AGI
  2. A reduction in the amplitude of seismic waves, as produced by divergence, reflection and scattering, and absorption. AGI
  3. That portion of the decrease in seismic or sonar signal strength with distance that is dependent not on geometrical divergence, but on the physical characteristics of the transmitting medium. CF: damping AGI
    Source: Dictionary of Mining, Mineral, and Related Terms

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