安裝中文字典英文字典辭典工具!
安裝中文字典英文字典辭典工具!
|
- visible light - Why is the sky never green? It can be blue or orange . . .
The question then becomes why not see the sky as green rather than blue Rayleigh scattering is inversely proportional to the fourth power of wavelength, so that shorter wavelength violet and blue light will scatter more than the longer wavelengths (yellow and especially red light)
- Why is the sky not purple? - Physics Stack Exchange
The net effect is that the red and green cones are stimulated about equally by the light from the sky, while the blue is stimulated more strongly This combination accounts for the pale sky blue colour It may not be a coincidence that our vision is adjusted to see the sky as a pure hue
- optics - Why does the sky change color? Why is the sky blue during the . . .
The keywords here are Rayleigh scattering See also diffuse sky radiation But much more simply, it has to do with the way that sunlight interacts with air molecules Blue light is scattered more than red light, so during the day when we look at parts of the sky that are away from the sun, we see more blue than red During sunset or sunrise, most of the light from the sun comes towards the
- Why is the sky *uniformly* blue? - Physics Stack Exchange
It's not clear why the color should not rapidly change from near blue at horizon to almost red near the Sun position: after all, the atmosphere is thicker along the lines going closer to horizon! The sky seems to be more uniformly blue than the typical explanation suggests
- Why is the sky blue and the sun yellow? - Physics Stack Exchange
The blue color of light of the sky is due to Rayleigh scattering But the sun itself appears yellow in color whereas the scattered sunlight itself appears blue Why does this happen? Should the sun
- visible light - Why is water blue? - Physics Stack Exchange
You guessed right, short, which is blue So blue gets scattered with a higher probability into our eyes whichever direction the light comes from, the bluer shorter wavelengths have a higher probability of getting scattered into our eyes, thus we see more blue (and yes, this is in part why the sky is blue)
- Why is the sky blue: For a 3-year old - Physics Stack Exchange
Why does the sky change color? Why is the sky blue during the day, red during sunrise set and black during the night? (5 answers) Closed 10 years ago My nephew asked me yesterday why the sky was blue I tried to explain it to him as best and as dumbly I could, but I failed
- visible light - Why is the sky blue? - Physics Stack Exchange
Possible Duplicate: Why does the sky change color? Basically what the title says What mechanisms are significant and how do they contribute to make the sky blue Also when the sky is not blue,
|
|
|