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optics - If blue light has a higher energy than red light, why does it ...

https://physics.stackexchange.com/questions/28745/if-blue-light-has-a-higher-energy-than-red-light-why-does-it-scatter-more

As E=hf=hcλ, blue light - with a smaller wavelength - should have a higher energy. However, it is the case that blue light scatters the As you've said in your question, blue light has a smaller wavelength …

optics - What makes some laser beams visible and other laser beams ...

https://physics.stackexchange.com/questions/20259/what-makes-some-laser-beams-visible-and-other-laser-beams-invisible

Jan 31, 2012 · What makes the beam of some lasers: visible? such as the ones used in clubs or such as the laser pointers sold at amazon which if pointed to the sky look like a solid visible beam of light …

Why can I never see any stars in the night sky?

https://physics.stackexchange.com/questions/26788/why-can-i-never-see-any-stars-in-the-night-sky

What color is your sky during the day? If it is deep blue, then you should see lots of stars at night even in a large city. If your daytime sky is very light blue though, or worse, pale grey, white, brown, or orange, …

Why is the sky not purple? - Physics Stack Exchange

https://physics.stackexchange.com/questions/28895/why-is-the-sky-not-purple

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 …

optics - Why does the sky look black in pictures taken from the summit ...

https://physics.stackexchange.com/questions/60226/why-does-the-sky-look-black-in-pictures-taken-from-the-summit-of-everest

In pictures taken from the summit of Mount Everest (such as this one), the colour of the sky is a very dark blue or even black in some pictures. I remember from my own experiences of hiking in the …

Why does the sky suddenly look gray through this window?

https://physics.stackexchange.com/questions/130457/why-does-the-sky-suddenly-look-gray-through-this-window

But why does it look so much less blue, when the values of the red and green channels are still smaller than the blue? That is entirely an effect of human perception.

How can sunlight be white , but pictures of the sun be orange?

https://physics.stackexchange.com/questions/74865/how-can-sunlight-be-white-but-pictures-of-the-sun-be-orange

The main reason why the sun doesn't look white is due to Rayeleigh Scattering means that the blue light from the sun is scattered so it appears to be yellow or even orange when viewed through thicker …

Why is the sky of the moon always dark? - Physics Stack Exchange

https://physics.stackexchange.com/questions/172624/why-is-the-sky-of-the-moon-always-dark

Mar 27, 2015 · So, the sky which scatters blue wavelengths appears blue and red/yellow wavelengths of sun survive to reach our eyes to give it its color. Mie scattering: For larger sized particles, all …

visible light - Why is the sky never green? It can be blue or orange ...

https://physics.stackexchange.com/questions/137189/why-is-the-sky-never-green-it-can-be-blue-or-orange-and-green-is-in-between

Sep 26, 2014 · The sky does not skip over the green range of frequencies. The sky is green. Remove the scattered light from the Sun and the Moon and even the starlight, if you so wish, and you'll be left …

visible light - Why is water blue? - Physics Stack Exchange

https://physics.stackexchange.com/questions/871827/why-is-water-blue

Apr 29, 2026 · 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 …