[mikewhite]

Hello!
I'm trying to make an experiment about why the sky has blue color (light scattering) for my next week, class presentation. I achieved this with  one white led, and a glass with nano particles (of polystyrene+acetone in alcohol or CaCO3 in water). The white light passes though the glass, the particles scatter the light and the light from the other side appears yellowish, while the glass seems like grey-blue. Do have any idea to  make a solution, with different elements to scatter more blue light, so the color of the glass get more vivid.
Cheers,

[mikewhite]

Hi! I would like to synthesize nanoparticles which will scatter mostly the blue light, so I place them in a glass and when white light passes through, the appear vivid blue. I have tried the reaction of ΗCl+H2O+Na2S2O3 but lasts about seconds. In addition, I tried (polystyrene+acetone)+alcohol but the blue light is not as scattered as I would prefer.
Thank you,

[aga]

Milk.

Google is your friend.
https://www.youtube.com/watch?v=Eo1WoKfJfkA

[Borek]

https://www.youtube.com/watch?v=4a0FbQdH3dY

You can ignore initial part about pendulum, later he gets to the Rayleigh scattering and shows two experiments. The latter shouldn't be difficult to reproduce.