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Description

This program simulates how refraction affects the shape and location of the actual fish seen by a human's sight.
The simulation shows a fish's image (dash line) seen by a fisher (eyes looking from air into water). Where do you think the fisher should place his net to catch the fish? 

此程式模擬位於空氣中(折射率n1)的人眼由水面上所觀得水裡(折射率n2)的魚的影像。

"該捕哪裡?": 此情境假設人在水面上(n1=1.0)看到水裡(n2=1.333)有隻魚(淡橘色虛像),請問他該將魚網放在哪裡(A,B,C)可以捉到水裡的魚呢? 
模擬操作: 請將魚網以滑鼠拖曳到你認為補得到魚的地方(A,B或C)後放開,如果魚網位置正確,則模擬會自動顯示魚的實像(深橘色)與光的路徑。如果改變n2值時眼睛所看見的魚的虛像位置會如何變化呢?

"游來游去": 此情境模擬當魚兒在水裡等深處來回游動時,人眼所見水裡魚兒虛像的的位置與形狀的變化。
模擬操作:  請按按鈕"游來游去"後按"Play" 執行模擬,按"Reset"終止模擬,亦可改變n2值後重新執行模擬,觀察不同n2時魚兒虛像的變化。

 

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