Yep, exactly. Scattering of light is proportional to the fourth power of the frequency (or, equivalently, inversely proportional to the fourth power of the wave

Yep, exactly. Scattering of light is proportional to the fourth power of the frequency (or, equivalently, inversely proportional to the fourth power of the wavelength). I've been telling this to my kids whenever I got the inevitable "why is the sky blue" line. :)