彩虹的形成

Full rainbow
Even like this
That’s all about rainbow. More beautiful rainbow wait you to find.
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Name： 方国明 No：2015E8015161052
The rainbow
The principle of rainbow
Do you know how it is produce? Now, let’s see the principles about rainbow. The basic principles are refraction and reflection.
The process of being rainbow as follow:
light
drops
Secondary rainbow purple light red light
primary rainbow
Double rainbow
The drawing illustrate the whole process, so we can see the fact that it has two rainbow, primary rainbow(虹) and secondary rainbow(霓), if your position is properly.
The principle of rainbow
The condition are water drops and light, the air is filled with drops after it rains, and the sunshine entry it, then the light will refract and reflect. The phenomenon as follow:
Reflection: the throwing back by a body or surface of light without absorbing it.
reflection
The principle of rainbow
refraction
Refraction is the fact or phenomenon of light, being deflected in passing obliquely(倾斜) through the interface between one medium and another or through a medium of varying refraction index.
water mist
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The principle of rainbow
The principle of rainbow
Because the refraction is different for various light like red light, purple light.
The principle of rainbow