I'm still sold on this
KOILON--THE AETHER OF SPACE
The following account was written by C. W. Leadbeater in 1907. It is reproduced here as giving further essential details concerning the relation between the planes of nature and the structure of the Anu:
The scientific hypothesis is that all space is filled with a substance called aether, as to the constitution of which many apparently contradictory statements are made. It is thought to be infinitely thinner than the thinnest gas, absolutely frictionless and without weight, and yet from another point of view far denser than the densest solid. In this substance the ultimate atoms of matter are thought to float as motes may be seen to float in the air, and light, heat and electricity are supposed to be its vibrations.
Theosophical investigators, using methods not yet at the disposal of physical science, have found that this hypothesis includes under one head two entirely different and widely separated sets of phenomena. They have been able to deal with states of matter higher than the gaseous, and have observed that it is by means of vibrations of this finer matter that light, heat and electricity manifest themselves to us. Seeing that matter in these higher states thus performs the functions attributed to the aether of science, they have (perhaps unadvisedly) called these states etheric, and have thus left themselves without a convenient name for that substance which fulfills the other part of the scientific requirements.
Let us for the moment name this substance koilon1, since it fills what we are in the habit of calling empty space. What Mûlaprakriti or "mother-matter" is to the inconceivable totality of universes, koilon is to our particular universe-not to our solar system merely, but to the vast unit which includes all visible suns. Between koilon and Mûlaprakriti there must be very many stages, but we have at present no means of estimating their number or of knowing anything whatever about them.
To any power of sight which we can bring to bear upon it this koilon appears homogeneous, though it is not probable that it is so in reality. It answers to scientific demands in so far that it is out of all proportion denser than any substance known to us--
1 Greek word meaning "hollow" - C. J.
THE NATURE OF MATTER 17
quite infinitely denser--belonging to another order and type of density altogether. For the very kernel and nexus of the whole conception is that what we call matter is not koilon, but the absence of koilon. So that to comprehend the real conditions we must modify our ideas of matter and space-modify them almost to the extent of reversing our terminology. Emptiness has become solidity and solidity emptiness.
if i had any idea how to calculate the speed of sound in an infinitely dense infinitely tense material I wouldn't be suprised if the answer had 186 or 300 in it