Tagged Questions
0
votes
0answers
28 views
Color of sky scattering by sky dust [duplicate]
Why does we see sky like blue in maximum time?
We know violet has less wavelength, so we should see sky like violet.
My assumption is that, violet is not primary color and not sufficient in the ...
4
votes
2answers
64 views
Attenuation mass-thickness for sunset light
We are able to look directly at the sun near sunset and sunrise, which clearly demonstrates the fact that our atmosphere attenuates visible light. Let's imagine it follows the typical attenuation ...
0
votes
0answers
61 views
Are EM waves scattered the most when the wavelength and the obstacle have a similar size?
I heard that when the wavelength and obstacle are similar in size, the scattering is the greatest. Is this true?
2
votes
2answers
190 views
How does scattering work?
Why is the sky blue?
I was always taught in high school that light with wavelength $\lambda$ acts like a little particle that wiggles up and down through space (in proportion to its magnitude). I was ...
2
votes
3answers
310 views
Why is the colour of sunlight yellow?
I was going through the preliminary papers of other schools and found a question that I did not know. It was "Why sunlight appears yellow?". Can anyone answer it?
6
votes
2answers
190 views
Blue-shifting as opposed to violet-shifting
A recent XKCD comic implies that the sky is blue as opposed to violet due to human physiology, and that animals more sensitive to shorter wavelengths will perceive the Earth's sky as the shortest ...
0
votes
2answers
152 views
Why is the sky blue? [duplicate]
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 ...
0
votes
1answer
84 views
Light in the absence of colloids?
If Earth had no colloids (Don't take LIFE into account) or any kind of scattering medium (like atmosphere) that promote to Tyndall effect, how would we able to receive the sun's rays? In the other ...
2
votes
2answers
1k views
If blue light has a higher energy than red light, why does it scatter more?
As $E=hf=\frac{hc}{\lambda}$, blue light - with a smaller wavelength - should have a higher energy. However, it is the case that blue light scatters the most. Why is it that higher energy rays scatter ...
13
votes
3answers
16k views
Why does the moon sometimes appear giant and a orange red color near the horizon?
I've read various ideas about why the moon looks larger on the horizon. The most reasonable one in my opinion is that it is due to how our brain calculates (perceives) distance, with objects high ...
20
votes
4answers
1k views
Why does the sky change color?
Why the sky is blue during the day, red during sunrise/set and black during the night?
