Weber-Fechner law

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We·ber-Fech·ner 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 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.

We·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 law
Weber-Fechner law - see under Weber, Ernst Heinrich

Weber,

Ernst Heinrich, German physiologist and anatomist, 1795-1878.
Fechner-Weber law - Synonym(s): Weber-Fechner law
Weber experiment - if the peripheral end of the divided vagus nerve is stimulated, the heart is arrested in diastole.
Weber law - Synonym(s): Weber-Fechner law
Weber 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 law
References in periodicals archive ?
According to the Subsection 4.2, due to the unknown of constant kin Weber's Law (Equation (1)), it is impossible to determine the absolute threshold.
Liao, "Illumination normalization based on weber's law with application to face recognition," IEEE Signal Processing Letters, vol.
This is consistent with their mathematically proven equivalence with respect to Weber's law and suggests that the equivalence extends to the absolute identification task as well.
(8.) Thaler (1980) refers to the application of Weber's law to the perception of gains and losses as the psychophysics of price.
Recent research focusing on the proportion of the amount that could be saved, rather than the absolute amount, is reviving interest in applying Weber's Law to pricing issues.
From the perspective of Weber's Law, the argument by the opponents of the sales tax bill (i.e., that most purchases are small, so the tax will not matter) is a red herring.
In this section, we first review Weber's Law and then propose the Contour Angle Feature (CAF).
His study results were published as a law known as Weber's law which claims that the just noticeable differences (JND) between stimuli are related to their magnitudes [18].