4 ms·

I think there’s even a lot of people who grew up in America that don’t fully get our system. I would be surprised if more than 50% of the population knows how

by cj 3y ago

I think there’s even a lot of people who grew up in America that don’t fully get our system. I would be surprised if more than 50% of the population knows how many ounces are in a cup of water. Same for feet per mile, etc. Thank goodness even in the US the metric system is used as standard within the science community.

fanf2 3y ago
In US customary units, a fluid ounce of water does not weigh an ounce avoirdupois, because US volume measures are not Imperial units: they are based on the pre-Imperial Queen Anne wine gallon. The British fluid ounce was defined to be the volume of an ounce of water, and the Imperial gallon was defined to be the volume of 10lb of water. This vague nod towards decimalization happened to match the pre-Imperial beer gallon fairly well, and it’s also why the Imperial pint has 20 fl oz instead of 16.