Bouguer-Weber Law

The Bouguer-Weber law is one of the fundamental laws in psychology that determines the relationship between skin sensitivity and differences in its movements. The law was discovered by 18th-century German scientists Hans Bougur and Eduard Weber, and explains that people can perceive differences in light brightness and sound intensity also in proportion to the speed of skin movements.

The Bouguer-Weber law states that the rate of skin sensitivity will be greater if the movement occurs faster. In other words, the faster objects around us move, the more strongly we feel their presence and movement. The law may also explain why watching moving objects can be more enjoyable because it is faster



Bouguer–Weber law

The Bouguer–Weber law is a psychophysical law formulated by the German physiologist and philosopher Hermann von Helmholtz together with the German physicist Carl Ludwig Wilhelm Weber in 1834. The law expresses the connection between the intensity of a person’s perception of the brightness of a given object in the material world and the amount of light energy received by the photoreceptor of the retina (photoreceptors are converters of light energy into nerve impulses). According to it, the brightness of a given point of the object under consideration is directly proportional to the intensity of the light flux incident on its surface. Carl Ludwig Weber hypothesized that sensation is a function of the intensity of the stimulus, and Hermann von Helmholtz proposed that the magnitude of excitation of the eye receptors is proportional to the logarithm of the intensity of the light stimulus. These assumptions were combined into the formula Bouguer-Weber law. The formula is as follows: F = I/b, where F is the strength of sensation or the threshold value of excitation of a particular receptor. Here I is the luminous intensity of the light stimulus or its intensity in photons/(cm²s), b is a constant, then