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Definition of Weber's law
1. Noun. (psychophysics) the concept that a just-noticeable difference in a stimulus is proportional to the magnitude of the original stimulus. "Weber's law explains why you don't notice your headlights are on in the daytime"
Medical Definition of Weber's law
1. The intensity of a sensation varies by a series of equal increments (arithmetically) as the strength of the stimulus is increased geometrically; if a series of stimuli is applied and so adjusted in strength that each stimulus causes a just perceptible change in intensity of the sensation, then the strength of each stimulus differs from the preceding one by a constant fraction; thus, if a just perceptible change in a visual sensation is produced by the addition of 1 candle to an original illumination of 100 candles, 10 candles will be required to produce any change in sensation when the original illumination was one of 1000 candles. Synonym: Fechner-Weber law, Weber's law. (05 Mar 2000)
Lexicographical Neighbors of Weber's Law
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