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Source: London – Arabia.net
Also, “entering the bathroom is not the same as leaving it.” According to the popular Egyptian saying, it is not the same to enter the elevator without a muzzle as it is to leave during the time of the new “Crown”, according to a new study that found that the droplets that result from someone’s cough inside an elevator remain widespread all over. 30 minutes if your door remains closed, which was confirmed by experts from the University of Amsterdam through field experiments, and they found that the spray remains inside the elevator for 4 minutes if your door is open, so use the muzzle before entering any elevator is the solution to avoid danger, or keep the door open. After each use of the elevator.
The scientific team in charge of the experiments was led by scientist Daniel Bonn from the Faculty of Sciences of the Dutch University, while the study and its results were published in the journal Indoor Environment and Health, known as an international journal of health and environment indoor environment, in which Daniel Bonn claimed that his team created a spray nozzle to shape the size and shape of the resulting aerosols. He coughed, then sprayed the simulated droplets into an elevator, using a laser to illuminate the particles so he could count and track them over time.
The team then conducted a series of experiments in an elevator during normal operation, where the door was open 10 to 20% of the time, and during this normal process it was found that spraying takes 12 to 18 minutes inside the elevator before decrease, while this period is reduced from 2 to 4 minutes. Minutes in which the elevator door is permanently open, according to the British newspaper “Daily Mail” of the study also contained in the same as during normal work cycles, saliva can remain up to 10 minutes after the infected person coughs .
As for the phlegm that the virus contains, which is a mixture of saliva and mucus produced by hospital patients, for example, the team explained that it can carry between 10 billion and one billion copies of the virus per milliliter, while talking loudly produces hundreds of thousands of drops per minute, whereas A single cough can produce millions of droplets, and if you breathe the air inside an elevator after an infected person speaks or coughs, you are absorbing up to thousands of particles. ” crown “per minute.
And on “YouTube” a large number of videos that warn against entering the elevator, without taking the necessary precautions to avoid the viral dangers that may be inside, including the video chosen by “Al-Arabiya.net” above, which it’s a bit old, but we’d find a doctor in it. It explains some of these risks and how to protect them, the most important of which is the use of the barrel, as a cheap and effective weapon.
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