Recent content by KGC

What happens to the absorbed light though, how come it is not re-emitted when the electron goes back down an energy level. The wavelengths that are reflected, is this because there is no electron requiring that energy to get up a level?

Quick question about colour. As far as I understand it the colour of the object comes from the frequencies of light reflected? My question though is when the light absorbs some of the frequencies would this not cause the excitiion and decay causing the material to emit photons of the absorbed...

Hello, in the eqn of state [density prop. to a^-3(W+1)] if you subbed in W=-2 you get density prop. to a^3. If you then plot a graph of density vs. scale factor it is a straight-forward graph. Good up until then, but then I got the interpretation wrong. This represents the "big rip". But how? I...