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Comment the math bit (Score 2) 72

it is possible to calculate the total amount of radiation she was exposed to, and to map that to tables that link radiation exposure to risk of cancer and death.

The tables can probably be challenged - I recall indications that the risks of long term low intensity exposure were overrated. But regardless of that, there will be a question of 'how high does the number for risk of getting cancer have to be before the judge decides the state has to pay compensation?

Comment Re: So... (Score 2) 21

The reason people go for less effective filters is that it takes less force to push air through them, which lets you put more air through it with the same force/noise. The filters have a similar particle profile, they are all very good at stopping tiny particles and very good at stopping larger particles, and comparatively worse at particles between 0.1 and 0.3 microns. It's just that a HEPA grade filter stops 99.7% or more of those hardest particles, whereas a MERV 13 filter (the most common furnace-grade throughput-optimized filter grade) stops 85%.

People who haven't looked into it probably imagine that there exists some small size of particle which HEPA stops but non-HEPA filters let through. But that isn't so. All particles which gets stopped by one gets stopped by the other, the difference is just at what rate - and the smallest particles are actually easier to stop (something to do with Brownian motion)

Comment Re: So... (Score 1) 21

Not anything with "ionization". Ionized air is a cute name for ozone. Ozone causes all the problems to your lungs that you clean air to avoid (well, except COVID infection I guess).

I wouldn't go for UV either since it either produces ozone or is quite bad to get exposed to depending on frequency range.

Get an air filter with high throughput. HEPA is standard, but many people argue that lower grade filters with higher throughput can be more noise efficient.

Hard to have sympathy with Elsevier, but this reeks of a failed COVID snake oil get-rich-quick schemer blaming someone else for not succeeding.

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