Scientists think of ULTRAVIOLET LED UV light to defeat Coronavirus indoors.
Some researchers hope decades-old technology may have found its moment and be implemented in shops, restaurants and schools.
As society tries to recover from the Coronavirus pandemic, some scientists hope decades-old technology can clear pathogens from the air in shops, restaurants and classrooms, potentially playing a key role in containing the further spread of the infection. “We have struggled in the past to use this highly effective and very safe technology for airborne infections,” said Dr. Edward A. Nardell, professor of global medicine for health and medicine at Harvard Medical School. “We have completed our studies. We know it works. ” It has in fact been understood that UV light disinfects and a UV part of its spectrum is particularly effective in eliminating pathogens present in the air. Not as President Trump said in April, when he incomprehensibly affirmed the importance of irradiating “the inside” of Covid-19 patients with ultraviolet light …
Portable ultraviolet units are already being used to sterilize the surfaces of hospital and subway rooms, but can only be used when those spaces are not occupied. In the approach described by scientists such as Dr. Nardell, wall or ceiling mounted fixtures, similar to the lights used today, send ultraviolet light well above people’s heads.
Ceiling fans are sometimes installed to draw air upwards, so that bacteria, viruses and floating fungi are eliminated more quickly. Ultraviolet light manipulates the genetic material in pathogens – DNA in bacteria and fungi, RNA in viruses – preventing them from reproducing. “It practically killed him,” said William P. Bahnfleth, professor of architectural engineering at Pennsylvania State University. (….)