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The curve for E. coli is given in the figure, with the most effective UV light having a wavelength of 265 nm. This applies to most bacteria and does not change significantly for other microbes. Dosages for a 90% kill rate of most bacteria and viruses range between 2,000 and 8,000 μJ/cm 2.
A germicidal lamp (also known as disinfection lamp or sterilizer lamp) is an electric light that produces ultraviolet C (UVC) light. This short-wave ultraviolet light disrupts DNA base pairing, causing formation of pyrimidine dimers, and leads to the inactivation of bacteria, viruses, and protozoans.
In other words, the right kind of UV rays have been proven to kill a variety of pathogens, including bacteria, viruses, and other coronaviruses, like Middle Eastern respiratory syndrome ...
UV light in combination with riboflavin has been shown to be effective in reducing pathogens in blood transfusion products. [11] [12] Riboflavin and UV light damages the nucleic acids in viruses, bacteria, parasites, and donor white blood cells rendering them unable to replicate and cause disease. [13] [14] [15]
Researchers compressed infrared light to 10% of its wavelength using a thin strontium titanate film, paving the way for advanced infrared imaging.
Ionizing radiation (electron beams, X-rays and gamma rays) [3] may be used to kill bacteria in food or other organic material, including blood. [ citation needed ] Food irradiation , while effective, is seldom used due to problems with public acceptance.
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