A gentle 1mph breeze clears an 90-ft diameter circle in a minute.
Do you have a source / calculation for that? (Not doubting it at all—I am interested in digging into how those values vary for other wind strengths etc., and the search results I’m getting are dominated by calculations on internal air changes.)
You mention near the start of the piece:
Do you have a source / calculation for that? (Not doubting it at all—I am interested in digging into how those values vary for other wind strengths etc., and the search results I’m getting are dominated by calculations on internal air changes.)
I think it’s just that 1 mile per hour = 88 feet per minute which is close to 90.
Yup!
I don’t think doubting should be either socially frowned-upon or uncalled-for where one doesn’t see an argument that makes a claim evident.