- Weber’s Law, formulated by German physiologist Ernst Heinrich Weber in the 19th century, describes the relationship between the magnitude of a physical stimulus and the perception of change in that stimulus.
- Essentially, the law states that the just noticeable difference (JND) between two stimuli is proportional to the magnitude of the stimuli.
- In simpler terms, the more intense the stimulus, the larger the change needed for a person to notice the difference.
- This law has applications in various fields, including psychology, marketing, and economics, helping to understand how humans perceive differences in stimuli such as weight, brightness, or sound.