News for hackers. Stuff that matters.

A comment on Secret gyms and the economics of prohibition. Parent comment

Re:Secret gyms and the economics of prohibition by skocznymroczny on Thursday August 20, 2020 @07:59AM (#24222315)
> Why else do doctors in hospitals wear N95 masks? To avoid getting sick.

I always thought they are meant to protect the patient from doctor coughing directly into an open surgery wound.

[ Parent | on HN ]
Re:Secret gyms and the economics of prohibition by intotheabyss on Thursday August 20, 2020 @08:19AM (#24222432)
That's a surgical mask. N95's protect the wearer from most particles (the 95th percentile in size).
[ Parent | on HN ]
Re:Secret gyms and the economics of prohibition by djhn on Thursday August 20, 2020 @08:55AM (#24222706)
The "95" in N95 refers to it filtering 95% of all particles in general, and particles with a diameter of 2.5 micrometers specifically.

The relationship between particle size and the ease of filtering them is U-shaped, not linear, with the dip at around 2.5 micrometers being the bottom of the trough.

[ Parent | on HN ]
Re:Secret gyms and the economics of prohibition by intotheabyss on Thursday August 20, 2020 @09:37AM (#24223073)
Oh thanks. I thought it was linear.
[ Parent | on HN ]