The electro-magnetic spectrum is often confused by writers and the public as simply meaning, magnetism. This is oversimplification. If course, if you run visible light through a prism you see some of the color vibrations it includes. Studies on blind school children have shown that painting a classroom in reds increased students' blood pressure an average of 10 points, while blues reduced blood pressure an average of 10 points. Color vibrations affect even those who cannot see them.
All wave lengths produce sound and color.
People don't see or hear most of them, but it is impossible to introduce a tone that does not affect the resonance of other already existing tones and the cells of the body, even if we don't hear or see them. Biomagnetic Research products introduce a resonance which helps create a stress-free harmony that is beneficial to humans. An example of frequencies that we do not hear, and which are neither electrical nor magnetic, is the special whistle used to drive rodents or pigeons from buildings, or a high pitched dog whistle. Crystal Catalyst Beads and products were tested in private tests at the University of Vienna, renowned for its research on the biological effects of harmful environmental energies. They found the results exciting.