During the 1920s and ’30s, Rife reportedly achieved astounding accomplishments in medicine and biology. He first invented and built five novel optical microscopes that allowed him to observe viruses in live cells and tissue cultures. Rife’s second major accomplishment was to invent numerous variable frequency flashing light ultrasound transmitters that could devitalize pathogens, bacteria, viruses, protozoa, and fungi.

These transmitters came in three versions. The first used a single pulsed frequency to achieve a specific set of associated harmonics, called Mortal Oscillatory Rates (MORs), that could devitalize targets. 

The second version expanded on this concept by adding a sweeping mechanism that allowed Rife to target even more unique frequencies. 

And the third and most effective version used this sweeping mechanism over a much wider range of frequencies (from a minimum of approximately 500 hertz to a maximum of about 50 kilohertz [50,000 hertz]), generating even more harmonics and eliminating the need to pre-select frequencies.

Rife’s incredible achievements have been well-documented, and you can learn more about his groundbreaking work here and here.