Stevens' law, also known as the power law of sensory magnitude, is a principle in psychophysics that describes the relationship between the intensity of a physical stimulus and the subjective sensation it produces. Some synonyms for this term include Stevens' power law, the Stevens-Davis law, and Stevens' exponent law. These terms all refer to the same principle and reflect the contributions of different researchers who have studied the relationship between stimulus intensity and sensation. Stevens' law is considered an important tool for understanding how people perceive sensory stimuli, and it has implications for a wide variety of fields, including medicine, psychology, and engineering.
