> Jerry wrote: > After wearing my COVID face mask in the car, I leave it on the > dashboard so the sun's rays have an opportunity to kill any > harmful microbes that may be present. Which brings up the > question of whether or not the ultraviolet rays can penetrate > glass, specifically automotive windshield glass.
Yes, UV will get through, but greatly reduced. > It is my understanding that to kill microbes, a wavelength of 254 > nanometers is necessary, most of which doesn't make it to earth. > So is this a useful practice or a fool's errand? The intensity of full sunlight is insufficient to deactivate a lipid virus, so the UV exposure will do nothing for the Wuhan flu. However, the elevated temperature will definitely decrease the time for the virus to deactivate. The UV exposure may be enough for bacteria or fungus - I don't know. _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
