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The perceived size of the change will be small if the stimulus is small in proportion.
What is the Weber-Fechner law?
Weber's law and Fechner's law, two related hypotheses in the study of psychophysics, are collectively referred to as the Weber-Fechner laws. Both rules apply to how people perceive things, and more particularly, how they relate when a physical stimulus actually changes and how that change is perceived. All of the senses' stimuli—vision, hearing, taste, touch, and smell—are included in this.
Fechner's law is a derivation from Weber's law (with additional assumptions), which states that the intensity of our sensation increases as the logarithm of an increase in energy rather than as rapidly as the increase. Weber's law states that "the minimum increase of stimulus which will produce a perceptible increase of sensation is proportional to the pre-existent stimulus," whereas Fechner's law is an inference from Weber's law (with additional assumptions) that states that "the minimum increase.
Gustav Theodor Fechner developed both Weber's law and Fechner's law (1801–1887). They appeared for the first time in 1860's Elemente der Psychophysik (Elements of Psychophysics). The word "psychophysics" was initially used by Fechner to designate the interdisciplinary study of how people perceive physical magnitudes in this article, which was the first effort in the discipline. [2] In his words, "Psycho-physics is a precise doctrine of the relation of function or dependence between body and spirit."
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according to the weber-fechner law, when the change in a stimulus is small in proportion to the original stimulus, the perceived size of the change will be
