• Xavienth
    link
    fedilink
    arrow-up
    4
    arrow-down
    2
    ·
    edit-2
    9 months ago

    I don’t like the bridge example because the values were chosen (intentionally or not) conveniently for metric. Change it to every 4 feet or 1.3 metres and it’s no longer convenient in either system. There are better examples that demonstrate the superiority of metric.

    For example, pool cleaner says 1 unit per 10,000 gal or 40,000 L.

    21’ diameter, 3’ tall. So ~1000 ft³. Multiply by 1728/231 for gallons.

    7 m diameter, 1 m tall. So ~40 m³. Multiply by 1000 for litres.

    If you’re curious where 1728/231 comes from, there are 12³ (1728) in³ for a ft³. Then the gallon is defined as 231 in³