German psychologist and physicist who studied the relationship between strength of stimulus and intensity of sensation, thereby founding psychophysics.

• 费克纳，古斯塔夫·狄奥多里克1801－1887德国心理学家及物理学家，他对刺激力量与感情强烈程度之间的关系进行研究，进而创立了物理心理学