Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dispersion of speech aerosols in the context of physical distancing
  recommendations   High-speed particle image velocimetry (PIV) was used to quantify the
dispersion of aerosol-laden gas clouds generated during phonetic vocalization
by a human subject at different sound intensity levels. The measured PIV data
was used to quantify the initial penetration depth. Using classical pulsed jet
scaling laws propagation distances were computed for time periods beyond the
measured duration. Our results indicate that the penetration distance was
comparable between loud intensity speech (for example during singing, classroom
lectures, parties etc.) and moderate intensity cough. Based on theoretical
aerosol propagation distance and time, the 6 feet physical distancing
recommendations are likely sufficient to avoid incidental exposure by the
initial penetration of the aerosol cloud, but insufficient for prolonged
exposure to slow propagating aerosol clouds.

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The categories of this paper are: comp-gas
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The categories of this paper are: patt-sol
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The categories of this paper are: solv-int
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The categories of this paper are: alg-geom
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The categories of this paper are: chao-dyn
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The categories of this paper are: eess
1
The categories of this paper are: cs
5
The categories of this paper are: gr-qc
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The categories of this paper are: astro-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: acc-phys
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The categories of this paper are: nlin
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The categories of this paper are: bayes-an
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The categories of this paper are: quant-ph
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The categories of this paper are: q-fin
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The categories of this paper are: adap-org