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About us Why is the sky blue? After days of rain, a patch of blue sky is a sight for sore eyes. But why is the sky blue? Light from the Sun appears white but it actually consists of many different colours.
We can see these different colours of light in a rainbow or when white light passes through prism. The different colours, or wavelengthsof light are scattered by these collisions by different amounts.
Blue light shorter wavelengh is scattered more than red light longer wavelength. So, when the Sun is high in the sky, blue light is scattered in all directions as sunlight passes through the atmosphere and we see the sky as blue.
Sunlight from the low Sun has to pass through much more atmosphere before it reaches your eyes meaning most of the blue light has already been scattered leaving just the red. The result is the beautiful colours we see at sunset and sunrise and, very occasionally, a flash of green light.
When we see a rainbow we can see a range of colours from red longer wavelength through yellows and greens to blues and eventually violet shorter wavelengths.
So if shorter wavelengths are more easily scattered why don't we see the sky as purple? The answer lies with how our eyes react to light. Inside the eye there are two types of cells that react to light.
The three types of cones are sensitive to lights of certain wavelengths. The 'blue' cones are more sensitive to blue than violet, so when you look up at the sky, the cones tell your brain you are seeing blue even though there is violet there. The folowing links are external You might also like:Essay on why a career in applied behavior analysis; Industry analysis for the airline industry; Logic pro 9 score writing a business; The history of competition between ibm and macintosh computers; Tips on writing a novel character building toys.
Blue light (shorter wavelengh) is scattered more than red light (longer wavelength). So, when the Sun is high in the sky, blue light is scattered in all directions as sunlight passes through the atmosphere and we see the sky as blue.
But it’s a different case when the Sun is close to the horizon at sunset or sunrise. Why the Sky is Blue Essay Why is the sky blue? In order, to answer this question it is necessary to understand what is the sky and everything in it.
Why is the sky blue? All Subjects. Accounting What did Alice Walker mean in the essay Beauty"?" Why did Dr. Frankenstein create his monster?
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