use units::si

### Other units

@name("Bar")
@url("https://en.wikipedia.org/wiki/Bar_(unit)")
@metric_prefixes
@aliases(bar: both, bars: both)
unit bar: Pressure = 100 kPa

@name("Ångström")
@url("https://en.wikipedia.org/wiki/Angstrom")
@aliases(angstroms, Å: short, Å: short)
unit angstrom: Length = 1e-10 meter

@name("Barn")
@url("https://en.wikipedia.org/wiki/Barn_(unit)")
@metric_prefixes
@aliases(barns)
unit barn: Area = 1e-28 meter^2

@name("Calorie")
@url("https://en.wikipedia.org/wiki/Calorie")
@metric_prefixes
@aliases(calories, cal: both)
unit calorie: Energy = 4.184 joule

@name("British thermal unit")
@url("https://en.wikipedia.org/wiki/British_thermal_unit")
@aliases(Btu)
unit BTU: Energy = 1055.05585262 joule

@name("Therm")
@description("A non-SI metric unit of heat energy. This is the ISO definition, also called Therm (EC).")
@url("https://en.wikipedia.org/wiki/Therm")
@aliases(therms)
unit therm: Energy = 100_000 BTU

@name("Thermie")
@url("https://en.wikipedia.org/wiki/Thermie")
@aliases(thermies)
unit thermie: Energy = 1000 kcal

@name("Pound-force")
@url("https://en.wikipedia.org/wiki/Pound_(force)")
@aliases(lbf: short)
unit pound_force: Force = 4.448222 newton

@name("Ounce-force")
@url("https://en.wikipedia.org/wiki/Ounce-force")
@aliases(ozf: short)
unit ounce_force: Force = 1 / 16 * lbf

@name("Kilogram-force")
@url("https://en.wikipedia.org/wiki/Kilogram-force")
@aliases(kgf: short)
unit kilogram_force: Force = 9.80665 newton

@name("Metric horsepower")
@url("https://en.wikipedia.org/wiki/Horsepower")
@aliases(hp: short)
unit horsepower: Power = 735.49875 W

@name("Revolution")
@url("https://en.wikipedia.org/wiki/Revolution_(unit)")
@aliases(revolutions, rev: short)
unit revolution: Angle = 360°

@name("Revolutions per minute")
@url("https://en.wikipedia.org/wiki/Revolutions_per_minute")
@aliases(RPM: short)
unit rpm: Frequency = 1 / minute

@name("Millimeter of mercury")
@url("https://en.wikipedia.org/wiki/Millimeter_of_mercury")
unit mmHg: Pressure = 133.322387415 pascal

@name("Mercury")
@url("https://en.wikipedia.org/wiki/Mercury_(element)")
unit Hg: Force / Volume = mmHg / mm

@name("Torr")
@url("https://en.wikipedia.org/wiki/Torr")
unit torr: Pressure = 101325 / 760 × pascal

@name("Pound-force per square inch")
@url("https://en.wikipedia.org/wiki/Pounds_per_square_inch")
@aliases(PSI: short)
unit psi: Pressure = 6.894757 kPa

@name("Kilopound-force per square inch")
@url("https://en.wikipedia.org/wiki/Ksi_(unit)")
@aliases(KSI: short)
unit ksi: Pressure = 1000 psi

@name("Megapound-force per square inch")
@url("https://en.wikipedia.org/wiki/Ksi_(unit)")
@aliases(MPSI: short)
unit mpsi: Pressure = 1000000 psi

@name("Standard atmosphere")
@url("https://en.wikipedia.org/wiki/Standard_atmosphere_(unit)")
@aliases(atmospheres, atm: short)
unit atmosphere: Pressure = 101_325 pascal

@name("Molar")
@url("https://en.wikipedia.org/wiki/Molar_concentration")
@metric_prefixes
unit molar: Molarity = 1 mol / litre

@name("Molal")
@url("https://en.wikipedia.org/wiki/Molality")
@metric_prefixes
unit molal: Molality = 1 mole / kilogram

@name("Football field")
@url("https://en.wikipedia.org/wiki/Football_pitch")
unit footballfield: Area = 105 m × 68 m # Standard FIFA football pitch

@name("Swimming pool")
@url("https://en.wikipedia.org/wiki/Olympic-size_swimming_pool")
unit swimmingpool: Volume = 50 m × 25 m × 2 m # Olympic-size swimming pool (FR3)

@name("Rack unit")
@url("https://en.wikipedia.org/wiki/Rack_unit")
@aliases(rackunits, RU: short, U: short)
unit rackunit: Length = 0.04445 meter

@metric_prefixes
@aliases(darcys, darcies)
@url("https://en.wikipedia.org/wiki/Darcy_(unit)")
unit darcy: Length^2 = (1 bar / 1 atmosphere) × micrometer²

# Angles

@name("Turn")
@url("https://en.wikipedia.org/wiki/Turn_(geometry)")
@aliases(turns)
unit turn: Angle = 2 π rad

@name("Gradian")
@url("https://en.wikipedia.org/wiki/Gradian")
@aliases(gradians, grad, grads, grade, grades, gon, gons)
unit gradian: Angle = 90° / 100

### Abbreviations

@name("Watt-hour")
@url("https://en.wikipedia.org/wiki/Watt_hour")
@metric_prefixes
@aliases(Wh: short)
unit watthour: Energy = W h

@name("Ampere-hour")
@url("https://en.wikipedia.org/wiki/Ampere_hour")
@metric_prefixes
@aliases(Ah: short)
unit amperehour: ElectricCharge = A h

@name("Kilometres per hour")
@url("https://en.wikipedia.org/wiki/Kilometres_per_hour")
unit kph: Velocity = kilometer per hour

@name("Micron")
@url("https://en.wikipedia.org/wiki/Micrometre")
unit micron: Length = µm

@name("Cubic centimetre")
@url("https://en.wikipedia.org/wiki/Cubic_centimetre")
@aliases(ccm)
unit cc: Volume = cm^3

@name("Fermi")
@url("https://en.wikipedia.org/wiki/Femtometre")
unit fermi: Length = 1 fm