You could go here Cassiopaean Session Transcripts and then click on the top right Search button and in the search bar write "short wave cycle" (with quotations), then click on 'Everywhere' and choose 'This forum' and then 'By' you type in Laura, because Laura usually posts the sessions. Doing this I found this transcript for example, where the C's say:I was looking for transcript in search function, but couldn't find it (I'm still learning to use website properly).
June 10, 1995
and:A: Or perhaps a fourth level soul... remember, as we have described to you before, levels one through four, more appropriately density levels one through four, all involve short wave cycle recycling, or, as you refer to it, reincarnation. Because, each and every one of these density levels has a soul and a physical body marriage, as it were, in progressive life experiences. Each and every one of these density levels involves movement to the fifth level of density for contemplation during the cycling process. It is level six, which is the first level where short wave cycle recycling is no longer necessary because there is no more physical orientation. Therefore, all levels, one through four have a soul reflection of the physical body at all times when in physical state. And, therefore, reincarnation of various types, is at various points on the short wave cycle always possible, and, in fact, quite probable. Do you understand?
October, 22 1994
Hope this helpsQ: (L) Does the interaction between the spirit/soul and the body physical produce some by-product that is desirable to other beings?
A: Well, all things have desirable consequences as well as undesirable consequences, but it must also be mentioned here that everything that exists in all realms of the universe can experience existence in one of only two ways. That would be defined as a long wave cycle and a short wave cycle. Going back to your previous question about why humans are "entrapped" in physical existence, which, of course, is voluntary and chosen, this was due to the desire to change from the long wave cycle experience of completely what you would call ethereal or spiritual existence, to the short wave cycle of what you call physical existence. The difference is that a long wave cycle involves only very gradual change in evolution in a cyclical manner. Whereas a short wave cycle involves a duality. And this is the case with souls in physical bodies as is experienced on this earth plane because the soul experiences an ethereal state for half the cycle and a physical state for the other half of the cycle. While these halves are not measured in time the way you measure time, the totality of experience is equal in each half. The necessity to form the short wave cycle was brought about through nature through the natural bounds of the universe when the group mind of souls chose to experience physicality as opposed to a completely ethereal existence.