An Etymological Dictionary of Astronomy and Astrophysics
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فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory

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Number of Results: 2 Search : weber
weber (Wb)
  وبر   
weber (#)

Fr.: weber   

The → SI unit of → magnetic flux. It is equal to 108 → maxwells.

Named after German physicist Wilhelm Eduard Weber (1804-1891).

Weber-Fechner law
  قانون ِ وبر-فشنر   
qânun-e Weber-Fechner (#)

Fr.: loi de Weber-Fechner   

A physiological relationship stating that to make a sensation increase in arithmetical proportion, the stimulus must increase in geometrical progression. In acoustics, the → bel (B) unit is used to relate the intensity of sound to an intensity level corresponding to the human hearing sensation. Similarly, the division of stars into a scale of → magnitudes is based upon the Weber-Fechner law. Same as Fechner's law.

After Ernst Heinrich Weber (1795-1878), a German physician, was one of the first people to approach the study of the human response to a physical stimulus in a quantitative fashion, and Gustav Theodor Fechner (1801-1887), a German physicist who founded psycho-physics and proposed the mathematical formulation in 1860; → law.