Safe distance has become a life-style for those trying to stay healthy with the spread of the Covid-19 virus. It has been widely accepted as a scientifically based means of limiting the spread of the virus as much as possible.

"If we can move a magic wand and freeze all the Emiris for 14 days while maintaining a distance of 1.8 meters between them, then the virus will stop spreading," said a report by the Dubai Future Foundation's "Observatory of the Future", according to an article published in the New York Times. ».

But even though keeping a safe distance greatly contributes to slowing the spread of the virus, researcher of pathology spread from MIT Lydia Purwipa stated in Gamma magazine that 1.8 meters is probably not enough, and she added that the science that recommends this goes back to 90 A year ago. There is no doubt that the science of the spread of diseases has evolved a lot since that time, but the public health guidelines did not keep pace with this development. Lydia wrote, "Although the strategies for social separation are of great importance in light of the current epidemic, it may surprise that our understanding of the transmission of infection from one host to another in respiratory diseases is based on a model developed in the thirties of the last century, which is very simple according to modern standards."

Lydia is looking at the fluid dynamics that circulate between people after coughing or sneezing, and in her research she discussed two main problems that health guidelines currently face; the first problem according to the Boston Globe, is that the virus is spread through regular expiration, so sneezing is not required for the epidemic to spread.

The second problem is that the virus may spread through gaseous clouds emitted by people when they cough or sneeze, and not only through visible drops that people seek to avoid depending on the safe distance of 1.8 meters, and it is worth noting that these clouds may spread the virus up to a distance of 8.2 meters in conditions Optimum.

Lydia told the newspaper, "Whenever possible, when being in a closed place, it is wise to keep the greatest distance possible."

The science that recommends this goes back 90 years.