4 ms·
SI isn't being used for real in Europe either. Highway speed limits there are always in kilometers per hour, instead of the SI units of meters per second as us
by throwaway81523 5y ago
SI isn't being used for real in Europe either. Highway speed limits there are always in kilometers per hour, instead of the SI units of meters per second as used for spacecraft. Heh.
- comboy 5y agoIt's called SI prefixes [1], you may also want to check the "Time" section. 1. https://en.wikipedia.org/wiki/Metric_prefix https://en.wikipedia.org/wiki/Metric_prefix
- ddek 5y agoAre you just trying to be obtuse? Expressing quantities in SI units doesn't require 'base units'. SI prefixes are permitted (milli, micro, kilo, mega...), as are certain exclusions (including minutes, hours, ...).