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Researchers Find Light Frequency That Kills COVID-19 Virus Without Harming Humans

Video Credit: Wochit
Published on September 21, 2020 - Duration: 00:38s

Researchers Find Light Frequency That Kills COVID-19 Virus Without Harming Humans

Gizmodo reports scientists have discovered a specific wavelength of UV light thatโ€™s both safe for people and can kill coronaviruses, both on surfaces and in the air.

Researchers from Columbia University and Japan's Hiroshima University, have found that a UVC light wave of 222 nanometers does the trick.

It's unable to penetrate the eyeโ€™s tear layer or the dead-cell layer of skin, preventing it from reaching and damaging living cells in the human body.

The Columbia study found 25 minutes of exposure to the UVC light killed 99.9% of two common coronaviruses that cause colds.

Hiroshima University researchers confirmed that far-UVC light was effective at killing SARS-CoV-2, which is the virus that causes COVID-19.

They exposed a viral culture on a polystyrene plate to a far-UVC lamp at a distance of 24 centimeters, which killed 99.7% of the virus in just 30 seconds.

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