介绍： 版权归原作所有，仅供此学习，若有侵权请告知删除。
[12:03.28]The last reading.
[12:09.38]Rainbow
[12:10.81]A rainbow is a circle of colors that appears in the sky when sunlight shines on raindrops.
[12:19.08]The sunlight and water work together to form rainbows.
[12:24.75]Think of sunlight flowing out in many l...

介绍： 版权归原作所有，仅供此学习，若有侵权请告知删除。
[12:03.28]The last reading.
[12:09.38]Rainbow
[12:10.81]A rainbow is a circle of colors that appears in the sky when sunlight shines on raindrops.
[12:19.08]The sunlight and water work together to form rainbows.
[12:24.75]Think of sunlight flowing out in many lines, called rays.
[12:29.79]The rays are an equal distance from each other.
[12:33.89]The light energy of the rays acts similar to waves, which have different lengths.
[12:41.17]Sunlight is made up of several wave lengths.
[12:45.59]People see the mix of lengths as what is called white light.
[12:51.00]But things change when a ray of white light hits a raindrop.
[12:56.04]That is when the colors that make up white light slow to different speeds.
[13:02.14]The light bends as it enters the raindrop.
[13:06.24]This bending separates the white light into colors,
[13:10.60]each color weakening as it moves into the next color.
[13:15.20]The light rays turn or bend again
[13:19.30]when they come out of the raindrop.
[13:21.36]This continuous bending through an area of raindrops is what makes the rainbow a perfect circle.