I understand the point about cymatics above, I was trying to say that not everyone thinks about Rife frequencies when someone mentions Royal Rife.

I have watched some cymatics videos in which they show various geometric forms being created after specific vibrations are applied, but there's no mention of the apparatus that performs that.

I see a metal plate that vibrates at apparently some audible frequency but how is that being done is not described. Is it a electromagnetically induced vibration, or a speaker underneath the plate blasting at it, or something else. Would be nice if someone could point me at how-to experiments for cymatics beginners

As far as page 1183 from the book I do not see anything related to cymatics there, what should I be looking for?