(no subject)

I had a particularly bad dream last night. My behavior in the dream left quite a bit to be desired. Let's just say it involved my ex and the creature he's fucking now. I remember feeling totally worthless and degraded and desperate in the dream. Quite miserable. I woke up feeling the same. Ain't dreams great! And to think - that's the first one I've remembered in a very long time.

Why is the sky blue? It's so simple.

( Rayleigh scattering )

The intensity I of light scattered by a single small particle from a beam of light of wavelength λ and intensity I0 is given by:



where R is the distance to the particle, θ is the scattering angle, n is the refractive index of the particle, and d is the diameter of the particle.

The angular distribution of Rayleigh scattering, governed by the (1+cos2 θ) term, is symmetric in the plane normal to the incident direction of the light, and so the forward scatter equals the backwards scatter. Integrating over the sphere surrounding the particle gives the Rayleigh scattering cross section σs:



The Rayleigh scattering coefficient for a group of scattering particles is the number of particles per unit volume N times the cross-section.

( more )

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HAHAHAHA - I think "Just because, kid." will do for now.