optics - If blue light has a higher energy than red light, why does it . . . 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 than red light Assuming you are talking about the sky, the scattering is from particles much smaller than the wavelength of light
How is temperature related to color? - Physics Stack Exchange If one object appears blue and another red, that doesn't always mean that the blue object is hotter than red Is that correct? If yes then how is it so? I am sorry but I'm bit confused over it With the "Color Temperature" concept on Wikipedia They say 1,700 K to match a flame But 15,000–27,000 K for a clear blue poleward sky This confuses me
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, then you have a problem City light polution will light up this haze at night and make it impossible to see any stars
optics - What makes some laser beams visible and other laser beams . . . 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 crossing the sky (it reminds me of the lightsaber in Star Wars) invisible? such as the ones used in pointers for presentations
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 look black in pictures taken from the summit . . . 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 Himalayas that the sky appeared to be darker blue as I climbed higher
visible light - Why is air invisible? - Physics Stack Exchange Rayleigh scattering is basically why sky is blue (and why it would be blue even if the air contained no oxygen) The scattering is inversely proportional to wavelength to 4th power, so the blue light is scattered a lot more than red light
Why is the sky of the moon always dark? - Physics Stack Exchange 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 wavelengths are scattered identically It is caused by larger particles like water droplets in clouds That's why they appear white or grey
visible light - Why is the sky never green? It can be blue or orange . . . 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 with something called airglow (check out the link, it's awesome, great pics, and nice explanation)