Hope asked in 教育與參考其他：教育 · 2 decades ago

# 何謂韋伯法則Weber's law

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2 decades ago
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韋伯定律(Weber's law)：

JND/S=K

其中 JND；可知覺的最小變化量，

S：標準刺激，

K：韋伯常數。

根據韋氏定律（Weber's Law），講的是對相對差異的識別能力比絕對差異強，他們能感覺到壓克力板2公尺長與3公尺長的差異，也能感覺到20公尺長與30公尺長的差異，但卻感覺不到29公尺長與30公尺長的差異。另外如，我們房間內的燈光，從黑暗到點亮燈光，很容易發覺，但我們卻無法察覺60燭光與61燭光的差別!

http://www.cioworld.net/cgi-new/violethtml/5/2004-...

附上一段查的原文資料，以供你參考

WEBER'S LAW, in psychology, the name given to a principle first enunciated by the German scientist, Ernst Heinrich Weber (1795-1878), who became professor at Leipzig (of anatomy, 1818, of physiology, 1840). He was-specially famous for his researches into aural and cutaneous sensations. His law, the purport of which is that the increase of stimulus necessary to produce an increase of sensation in any sense is not a fixed quantity but depends on the proportion which the increase bears to the immediately preceding stimulus, is the principal generalization of that branch of scientific investigation which has come to be known as psycho-physics

http://9.1911encyclopedia.org/W/WE/WEBER_S_LAW.htm

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