2011年11月24日星期四

The Rainbow Formation 彩虹的形成

When the sunlight strikes a raindrop, the light is refracted (bent) because the light is moving from one medium(air) to another( water). Drops of rainwater can disperse light in the same way as a prism.. When the light comes out of the water droplet, the sun's rays (white light)have now been split into their component wavelengths (colors). In this way, each individual raindrop behaves just like a prism, dispersing white sunlight into its seven component colors and a rainbow is formed. The rainbow we see is thus a result of many, many raindrops bending the sun's rays.

2 条评论:

  1. Bahan pengajaran sangat menarik...

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  2. Pelangi yang indah itu mendorong saya mencipta bahan pengajaran itu.

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