Weber-Fechner law

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Noun1.Weber-Fechner law - (psychophysics) the concept that the magnitude of a subjective sensation increases proportional to the logarithm of the stimulus intensity; based on early work by E. H. Weber
law of nature, law - a generalization that describes recurring facts or events in nature; "the laws of thermodynamics"
psychophysics - the branch of psychology concerned with quantitative relations between physical stimuli and their psychological effects
References in periodicals archive ?
Quantitatively, the Weber-Fechner law states that a noticeable change in the human sensation of brightness has a logarithmic relationship, not a linear one.
These spatial contrast measures are usually derived from Weber-Fechner law, Michelson contrast measure [5], or Contrast Ratio (CR).
The first group comprises relations derived from the psychophysics laws, for example, a logarithmic relationship between QoE and QoS derived from the well known psychological Weber-Fechner Law (WFL) [9].