What's more, because this light is so powerful, it's probably not what's being used in those phone-cleaning devices. "They're usually useless because many of the products that are meant for consumers have to be super safe," says Edward A. Nardell, MD, a professor of global health and social medicine at Harvard Medical School tells Refinery29. "If they're super safe, they usually put out very little UV light," Dr. Nardell says.
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May 29, 2020 at 06:26AM
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Can UV Light Actually Kill Coronavirus? - Refinery29
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