At the same UV light intensity it takes to kill 99.9% of SARS-CoV-2 in 20 seconds, a person could be safely exposed to 222-nanometer light for up to one hour and 20 minutes.

At the same UV light intensity it takes to kill 99.9% of SARS-CoV-2 in 20 seconds, a person could be safely exposed to 222-nanometer light for up to one hour and 20 minutes.

UV light is present in natural sunlight and, although the most damaging wavelengths (extreme UV from 10 nm to 120 nm and midrange UV from 280 nm to 315 nm) are filtered by our ozone layer before ...

So it can kill bacteria and viruses, but it can’t damage us. That, at least, is the principle. IRA FLATOW: I mean, it sounds so obvious. Why hasn’t anybody thought of this before? Not to denigrate ...

UV light robot can kill ‘superbugs’ April 14, 2015 . Share › ...

Electrify Bug Zapper that acts as the leader in power, convenience, and versatility that works by emitting a UV light that attracts bugs to the device center. The bug zapper is incredibly effective at ...

At the same UV light intensity it takes to kill 99.9% of SARS-CoV-2 in 20 seconds, a person could be safely exposed to 222-nanometer light for up to one hour and 20 minutes.