點解d 野放係水到 從air睇起上黎會曲左(請用折射解釋)

圖片參考：http://i182.photobucket.com/albums/x4/A_Hepburn_1990/waterwavediffusedrefraction.jpg?t=1183787824


從以上睇，由於水有水波，有crest 同 trough。而以上睇，trough就好似一個concave lens，將光線diverge。(漫折射，diffused refraction)

而我地隻眼interpret到，認為光係直線打入我地眼睛。所以物體好像扭曲了一樣。

IR REFERS TO THE REFRACTIVE INDEX
EACH MEDIA HAVE A REFRACTIVE INDEX
MEDIA PASSING INTO WATER IS BENT BECAUSE IT TRAVELS AT A LOWER SPEED IN WATER. WE ALSO SAY THAT THE BENDING DEPENDS ON THE REFRACTIVE INDEX OF WATER. IN FACT, REFRACTIVE INDEX OF A MEDIUM IS RELATED TO SPEED OF LIGHT. THE HIGHER THE REFRACTIVE INDEX OF THE MEDIUM, THE LOWER THE SPEED IT BENTS.
MATERIALS WITH LARGER REFRACTIVE INDICES ARE CALLED OPTICALLY DENSER MEDIA.MATERIALS WITH SMALLER REFRACTIVE INDICES ARE CALLED OPTICALLY LESS DENSE MEDIA. BOTH GLASS AND WATER ARE OPTICALLY DENSER THAN AIR, WHEREAS GLASS IS OPTICALLY DENSER THAN WATER.

HOPE I CAN HELP U