The four philosophical Elements are what comprise all physical aspects of Creation. They are Fire, Water, Air, and Earth. These Four Elements arise from the Trinity of the three philosophical Principles of Senses of Vibration: A History of the Pleasure and Pain of Sound: Shelley Trower: Continuum Bloomsbury The Principle of Vibration: Raising Your Frequency Mumbles & Things Principles of Vibration: Tongue, Benson H.: 9780195142464: Amazon.com: Books 6 Principles and Techniques of Vibrations (Mirovich) PDF Matrix (Mathematics) Eigenvalues And Eigenvectors Application of biomimetic tongue substrate to investigate the role of friction and vibration in sensory texture perception ScienceDirect