Ultraviolet & Viruses

"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