Certainly a breeze is better than no breeze, but, “a gentle 1mph breeze clears an 90-ft diameter circle in a minute,” is probably not be even approximately true if the breeze is turbulent, which most breezes are.
Anyone reading this has probably experienced a non-turbulent (i.e., “laminar”) breeze. One sign that a breeze is laminar is that the breeze makes you cold a lot faster than you would guess based on (your subjective impression of) the speed of the breeze. A breeze at dusk or at night is more likely to be laminar than a breeze when the sun is strong. A breeze on a beach is more likely to be laminar than a breeze inland.
Some enterprises intentionally create laminar breezes indoors: semiconductor fabs, surgical operating rooms, mushroom growers. The method universally used (squirrel-cage fans and HEPA filters) might also reliably filter coronavirus from the laminar breeze.
Certainly a breeze is better than no breeze, but, “a gentle 1mph breeze clears an 90-ft diameter circle in a minute,” is probably not be even approximately true if the breeze is turbulent, which most breezes are.
Anyone reading this has probably experienced a non-turbulent (i.e., “laminar”) breeze. One sign that a breeze is laminar is that the breeze makes you cold a lot faster than you would guess based on (your subjective impression of) the speed of the breeze. A breeze at dusk or at night is more likely to be laminar than a breeze when the sun is strong. A breeze on a beach is more likely to be laminar than a breeze inland.
Some enterprises intentionally create laminar breezes indoors: semiconductor fabs, surgical operating rooms, mushroom growers. The method universally used (squirrel-cage fans and HEPA filters) might also reliably filter coronavirus from the laminar breeze.
Here is a home-made laminar flow “wall” to be used to prepare mushrooms for growing: https://www.youtube.com/watch?v=RmnpdHM5Loc