This is maybe one of the top hot topics today especially in this time of the pandemic. Many people ask if ultraviolet light can kill viruses (COVID-19), germs, and bacteria. How does it kill those?
In this short blog, let us expound on it and clarify some things regarding it.
Firstly, let us take a look at the meaning of “ultraviolet.” It came from the Latin word “ultra” which means “beyond,” and the English word “violet.” The ultraviolet radiation was discovered by the German physicist Johann Wilhelm Ritter in 1801. In visible light, the violet color has the highest frequencies. Since ultraviolet is beyond violet, it has a higher frequency and shorter wavelength than the violet color. The sun can provide this radiation but luckily, the Earth’s ozone layer has a big help in this situation because it will absorb the radiation and disallow exposing it to human skin. But there are many human-made products that will provide UV radiation.
When you heard about “ultraviolet light,” it talks about “radiation.” This is one of the ways that can be used to disinfect without using chemicals such as alcohol, soap, etc.
HOW ULTRAVIOLET LIGHT KILLS VIRUSES/GERMS/BACTERIA?
The viruses and bacteria are made of protein, nucleic acid, and other essential components.
According to www.healthline.com, the radiation emitted from the UV light can damage the molecules of the viruses, germs, and bacteria like nucleic acids and proteins. Thus, the bacteria/virus/germs cannot continue to process to make them survive.
So the answer to the question if the ultraviolet light can really kill viruses/germs/bacteria, the answer is YES! It can kill them in the air, surface, or liquids.
But you have to remember that most of the UV lights are not good for your skin and eyes. They might cause irritation, burns, damage the tissue of your skin if you exposed to it.
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Sources:
www.healthline.com/health/does-uv-kill-coronavirus
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