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Investigators, as reported CNNiuse one wrist and through a cough simulation, they receive data on how far the drops go, but also how long they remain in the air.
According to the American media, two teachers are studying … Force step.
What are they doing; They put glycerin and water in the doll’s mouth and with a pump they “cough”.
They videotape the entire process and the special lighting they use allows them to record how far the drops go.
“They fill the air,” says his journalist CNNi attending one of these tests.
According to experts, the drops travel immediately at a distance of about 90 cm, within 5 seconds of coughing they reach approximately two meterswhile in just ten seconds 2 meters and 75 centimeters. Somewhere there their rapid movement stops, but they continue to move and 30-40 seconds later they have reached a distance. 3 meters and 60 centimeters.
The experiment was carried out several times and the results were the same.
As the US media says Manhar Dhanak, head of the Engineering Department of the Universidad del Atlántico, the drops can remain in the air for 2.7 meters for 2 to 3 minutes.
The its concentrations after two meters are of lower density, but still have the ability to transmit viruses.
When one stands simple mask on the wrist, the drops come out again and are, of course, spread to a much lesser degree.
Finally, the journalist tries to show what happens when someone he coughs into his hand. The drops are released in any direction. They don’t go very far, but they spread everywhere.
Dhanak is asked about her. distance of two meters that citizens must observe from each other, in the context of measures to prevent their dispersion crown, points out that it is very important to be observed, but the further away you are, the better.
See how a mask affects how a cough travels, CNN
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