// Copyright 2020 Damien Guichard
//
// ERic v0.3 hierarchy
//
// Licensed under the EUPL-1.2-or-later
//
// The SIU is the "Système International d'Unités"

untyped hierarchy entity relation.

derive entity measure.

derive measure length mass time electric-current temperature luminous-intensity amout-of-substance.
   derive length meter.
   derive mass kilogram.
   derive time second minute hour day week month year.
   derive electric-current ampere.
   derive temperature celsius fahrenheit kelvin.
   derive luminous-intensity candela.
   derive amout-of-substance mole.
derive measure frequency angle force pressure energy power electric-charge voltage.
   derive frequency hertz.
   derive angle radiant.
   derive force newton.
   derive pressure pascal.
   derive energy joule.
   derive power watt.
   derive electric-charge coulomb.
   derive voltage volt.
derive measure electric-capacitance electric-resistance electric-conductance magnetic-field.
   derive electric-capacitance farad.
   derive electric-resistance ohm.
   derive electric-conductance siemens.
   derive magnetic-field tesla.
derive measure inductance luminous-flux illuminance radioactivity absorbed-radioactive-dose equivalent-radioactive-dose.
   derive inductance henry.
   derive luminous-flux lumen.
   derive illuminance lux.
   derive radioactivity becquerel.
   derive absorbed-radioactive-dose gray.
   derive equivalent-radioactive-dose sievert.
derive measure area volume velocity volumetric-flow acceleration torque action.
   derive area square-meter.
   derive volume cubic-meter liter.
   derive velocity meter/second kilometer/hour mile/hour.
   derive volumetric-flow cubic-meter/second.
   derive acceleration meter/square-second.
   derive torque newton*meter.
   derive action joule*second.