"The light, which contains the carrier and a mixture of selected signals in the UV range, stimulates the biological material in the Somatoscope to the point that the specimens give off their own light. (Rife referred to this as luminescence.)"
http://www.rexresearch.com/naessens/naessens.htm
"More than 75% of the organisms Rife could see with his Universal Microscope are only visible with ultra-violet light. But ultraviolet light is outside the range of human vision, it is 'invisible' to us. Royal Rife's brilliance allowed him to overcome this limitation by heterodyning, a technique which became popular in early radio broadcasting. He illuminated the microbe (usually a virus or bacteria) with two different wavelengths of the same ultraviolet light frequency which resonated with the spectral signature of the microbe. These two wavelengths produced interference where they merged. This interference was, in effect, a third, longer wave which fell into the visible portion of the electromagnetic spectrum. This was how Dr. Rife made invisible microbes visible without killing them, a feat which today's electron microscopes still cannot duplicate."
https://www.royal-rife-machine.com/Universal-Prismatic-Microscope.htm
"Ultraviolet germicidal irradiation, or UVGI, is the use of ultraviolet (UV) energy to kill viral, bacterial, and fungal organisms."
https://www.cdc.gov/coronavirus/2019-ncov/community/ventilation/UVGI.html
"Simulations show ultrasound waves at medical imaging frequencies can cause the virus’ shell and spikes to collapse and rupture."
https://news.mit.edu/2021/ultrasound-coronaviruses-damage-0316
"Dr. Royal Rife developed a technique referred to as the RIFE Frequency. Simply put, he used the resonant frequency (the frequency that the virus vibrates at) to cause the virus to oscillate and then turned up the intensity or volume if you will. This resulted in the structural integrity of the virus collapsing and destroying itself. This phenomenon was referred to by Dr. Royal Rife as the “mortal oscillatory rate” or MOR.
The good news is, every cell and bacteria resonate at their own unique frequency with healthy cells and probiotics vibrating at a higher frequency. As a result, only the targeted cancer virus gets destroyed, leaving the other tissues intact. The germ gets killed and the body is relieved of the infectious agent without damage"
https://www.insighthealthapps.com/blogs/news/the-truth-about-cancer-dr-royal-rife-s-work
"Normal cells should not be affected by the virus-killing lasers or sound waves because they have resonant frequencies much lower than those of viruses, Sankey said."
https://www.livescience.com/7472-kill-viruses-shake-death.html