I think the most insane combination of units can be found in aviation. They use feet for altitude but nautical miles for distance, then they use knots (nautical miles per hour) for horizontal velocity, but for vertical velocity they use feet per minute.
I think the most insane combination of units can be found in aviation. They use feet for altitude but nautical miles for distance, then they use knots (nautical miles per hour) for horizontal velocity, but for vertical velocity they use feet per minute.
Just last week I found this unit right here and I still haven’t stopped chuckling
https://en.wikipedia.org/wiki/Foot-candle
Well, and then you need a US customary mass unit when you’re designing the things.
Introduce the slug, not to be confused with a pound-mass (lbm), which is distinct from pound-force (lbf).
And then you can start building inertial moments in slug-ft^2.