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Weber-Fechner law
Thesaurus| Noun | 1. | 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. WeberFechner's lawlaw 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 |
EncyclopediaSeeweber-turnsWeber-Fechner law
We·ber-Fech·ner lawthe 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 are applied and so adjusted in strength that each stimulus causes a 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 perceptible change in a visual sensation is produced by the addition of 1 candle to an illumination with an original strength of 100 candles, then 10 candles will be required to produce a perceptible change in sensation in an illumination with an original strength of 1000 candles. Synonym(s): Fechner-Weber law, Weber lawWe·ber-Fech·ner law (vā'ber-fek'nĕr law) 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.
Synonym(s): Fechner-Weber law, Weber law. Weber-Fechner law or Fechner's law a law stating that sensation increases arithmetically as the stimulus increases geometrically Named after Ernst Weber (see WEBERIAN OSSICLE and the German physicist Gustav Fechner (1801–87).Fechner, Gustav T., German physicist, 1801-1887. Fechner paradox - refers to apparent increase in brightness of a figure when viewed with one eye after first viewing with both eyes.Fechner-Weber law - Synonym(s): Weber-Fechner lawWeber-Fechner law - see under Weber, Ernst Heinrich
Weber, Ernst Heinrich, German physiologist and anatomist, 1795-1878. Fechner-Weber law - Synonym(s): Weber-Fechner lawWeber experiment - if the peripheral end of the divided vagus nerve is stimulated, the heart is arrested in diastole.Weber law - Synonym(s): Weber-Fechner lawWeber paradox - if a muscle is loaded beyond its power to contract, it may elongate.Weber-Fechner law - the intensity of a sensation varies by a series of equal increments as the strength of the stimulus is increased geometrically. Synonym(s): Fechner-Weber law; Weber lawFinancialSeeWeber's LawWeber-Fechner law
Synonyms for Weber-Fechner lawnoun (psychophysics) the concept that the magnitude of a subjective sensation increases proportional to the logarithm of the stimulus intensitySynonymsRelated Words- law of nature
- law
- psychophysics
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