Face shields ineffective at trapping aerosols, says Japanese supercomputer
Simulation using world’s fastest supercomputer casts doubt on effectiveness in preventing spread of coronavirus
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Plastic face shields are almost totally ineffective at trapping respiratory aerosols, according to modelling in Japan, casting doubt on their effectiveness in preventing the spread of coronavirus.
A simulation using Fugaku, the world’s fastest supercomputer, found that almost 100% of airborne droplets of less than 5 micrometres in size escaped through plastic visors of the kind often used by people working in service industries.
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