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Forget Covid.......

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ToraToraTora | 08:05 Fri 12th Jun 2020 | News
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https://www.bbc.co.uk/news/business-53019360
Anyone else think we just cut out head off because of a nose bleed?
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> It's everywhere that 2 meters was a randomly plucked length with little back-up to show that 1m would be worse and 3m better

PP's response that the inverse square law is what applies is entirely correct. Volume is not appropriate since we're looking worst case at the number of particles at the surface, not within the forbidden range. As for cone/sphere - it is in fact a spherical sector, and the inverse square law applies.
21:56 Fri 12th Jun 2020

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