Understanding the science of air purifiers and viruses Air purifiers use fans to draw in air and pass it through a filter before expelling the purified air out the other side. They’re particularly effective at removing odors and large particulates from the air. If you suffer from pet allergies, for example, an air purifier can help capture the dander and reduce your symptoms. On the other hand, there is a limit to what an air purifier can capture. … [Read more...] about Can air purifiers protect you from the coronavirus?
QR codes are links that can be scanned using smartphone apps. Often used for commercial purposes, they usually send you to a website, where you can perhaps purchase a particular product or download something. Given that links usually involve long URLs that can’t be easily typed into a phone’s browser, QR codes are a quick and painless shortcut to send someone to a particular web location on their mobile. They can also be used to encode and send other kinds of information, such as contact details and even plain text. … [Read more...] about The best QR code scanning apps for Android or iOS