彩虹的简介,

彩虹的简介,
彩虹的简介,

彩虹的简介,
彩虹是阳光射到空气中的水滴里发生的光学现象,雨后常见.形状弯曲,色彩艳丽.
Rainbow sun shines in the air drop in the optical phenomenon occurred,after the rain common.Curved shapes,colorful.
彩虹是因为阳光射到空中接近圆形的小水滴,造成色散及反射而成.阳光射入水滴时会同时以不同角度入射,在水滴内亦以不同的角度反射.当中以40至42度的反射最为强烈,形成我们所见到的彩虹.形成这种反射时,阳光进入水滴,先折射一次,然后在水滴的背面反射,最后离开水滴时再折射一次.因为水对光有色散的作用,不同波长的光的折射率有所不同,蓝光的折射角度比红光大.由于光在水滴内被反射,所以观察者看见的光谱是倒过来,红光在最上方,其他颜色在下.
Rainbow because the sun shines nearly round air droplets,resulting in dispersion and reflection made.Sunshine will be launched into water droplets at different incident angles at the same time,the drop in reflection through various angles.Among 40 to 42 degrees to the most intense reflection,we see the formation of the rainbow.The formation of such reflection,the sun drops into the first refracted once,and then drop the back of the reflection,refraction last to leave once again when the water droplets.Because the water dispersion of light there is the role of the refractive index of light of different wavelengths is different than the red light blue light refraction angle large.Because the light is reflected within the water droplets,so the observer to see the spectrum is reversed,

A rainbow is an optical and meteorological phenomenon that causes a spectrum of light to appear in the sky when the Sun shines onto droplets of moisture in the Earth's atmosphere. They take the form o...

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A rainbow is an optical and meteorological phenomenon that causes a spectrum of light to appear in the sky when the Sun shines onto droplets of moisture in the Earth's atmosphere. They take the form of a multicoloured arc, with red on the outer part of the arc and violet on the inner section of the arc.
A rainbow spans a continuous spectrum of colours; the distinct bands are an artifact of human colour vision. The most commonly cited and remembered sequence, in English, is Newton's sevenfold red, orange, yellow, green, blue, indigo and violet (popularly memorized by mnemonics like Roy G. Biv). Rainbows can be caused by other forms of water than rain, including mist, spray, and dew.

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