"Questioner: Could you define the word density as we have been using it?

Ra: I am Ra. The term density is a, what you call, mathematical one. The closest analogy is that of music, whereby after seven notes on your western type of scale, if you will, the eighth note begins a new octave. Within your great octave of existence which we share with you, there are seven octaves or densities. Within each density there are seven sub-densities. Within each sub-density, are seven sub-sub-densities. Within each sub-sub-density, seven sub-sub-sub-densities and so on infinitely."