Ultraviolet-C disrupts DNA/RNA by altering the pyrimidine, specifically finding covalent bonds. DNA/RNA is in all pathogens including viruses, bacteria, fungi, parasites, etc. The UVC energy is absorbed and then causes breakdown of the thymine cytosine bond and mutations then develop in the DNA, which can permanently alter replication. Therefore, it can effectively disinfect/sterilize these pathogens. DNA/RNA is formed by nitrogen molecules including purines (adenine/guanine) and pyrimidines (cytosine and thymine). The UVC affects the pyrimidines bonding mechanism. By altering the thiamine/cytosine bonds, it breaks essentially the DNA/RNA and prevents pathogens replicating as well as disinfecting/sterilizing existing pathogens. This requires an appropriate amount of energy, which is delivered by power over time to a surface.