Litre definition

[seandenigris]

If you wonder why a litre is defined as:

initializeExtraVolumeUnits

  <ignoreForCoverage>
  Units
    bind: #litre
    to:
    ( ( Units >> #decimeter raisedToInteger: 3 ) aliasedBy: 'litre' plural: 'litres' symbol: 'l' ).
  self addMultiplesAndSubmultiplesOf: Units >> #litre as: #litre

It's because "Liter (L) is a special name for the cubic decimeter (dm3)" [1]

Mind blown!

1. https://www.nist.gov/pml/owm/si-units-volume

[gcotelli]

It's not the only case, if you take a look at
self initializeHertz.
self initializeNewton.
self initializePascal.
self initializeJoule.
self initializeWatt.
self initializeCoulomb.
self initializeVolt.
self initializeFarad.
self initializeOhm.
self initializeSiemens.
self initializeWeber.
self initializeTesla.
self initializeHenry.
self initializeSteradian.
self initializeLumen.
self initializeLux

All these units are aliasing a combination of others. For example the Newton is just a shortcut for Kg · m / s²