Viewing a single comment thread. View all comments

TheRealStorey t1_ja5s637 wrote

Reply to comment by kinyutaka in ELI5: Why isn't the Litre (L) considered a "non-SI" unit? by enby-millennial-613

A Liter is the volume of 1kg of water at STP (Standard Temperature and Pressure)

2

kinyutaka t1_ja5w157 wrote

That is also true.

A cm^3 of water is one gram.

1

TheRealStorey t1_ja5zb7s wrote

It was made to be universally transferable, everyone has water, there is a standard meter stick in France and it was updated to the length traveled by some light so it's universally reproducible. SAme with a second, it's the vibrations of some atom, but the idea is anyone can perform the same experiment anywhere and have the same precise measurement.

1