Refraction of Light by Water
光在水中的折射
Light entering or exting a water surface is bent by refraction. The index of refracton for water is 4/3, implying that light travels 3/4 as fast in water as it does in vacuum.
光进入或离开水面时会发生折射。水的折射率是4/3，这意味着光在水中的传播速度是真空中的3/4。
Refraction at the water surface gives the "broken pencil" effect shown above. Submerged objects always appear to be shallower than they are because the light from them changes angle at the surface, bending downward toward the water.
水面上的折射现象产生了上述所示的“断 pencil 效应”。 submerged 对象总是看起来比实际更浅，因为它们的光在表面改变角度，向下弯曲进入水中。
| Refraction and the eye
折射与眼睛 | Refraction of sound
声的折射 |
| The gar story
玻璃的故事 |
Lens concepts
棱镜概念索引
| HyperPhysics***** Light and Vision
HyperPhysics ***** 光与视觉 | R Nave |
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