SI (All javadoc for netcdf-java version 4.6.22-SNAPSHOT)

java.lang.Object
- ucar.units.UnitSystemImpl
- - ucar.units.SI

All Implemented Interfaces:

java.io.Serializable, UnitSystem
```
public final class SI
extends UnitSystemImpl
```
Provides support for the International System of Units (SI). A good on-line reference for the SI can be found at .

See Also:

Serialized Form

Field Summary

Fields
Modifier and Type	Field and Description
`static Unit`	`AMOUNT_OF_SUBSTANCE_UNIT` The unit corresponding to the quantity of amount of substance.
`static BaseUnit`	`AMPERE` Base unit of electric current.
`static Unit`	`ANGSTROM` Special derived unit -- temporarily accepted for use with the SI -- for the quantity of length.
`static Unit`	`ARC_DEGREE` Special derived unit -- accepted for use with the SI -- for the quantity of plane angle.
`static Unit`	`ARC_MINUTE` Special derived unit -- accepted for use with the SI -- for the quantity of plane angle.
`static Unit`	`ARC_SECOND` Special derived unit -- accepted for use with the SI -- for the quantity of plane angle.
`static Unit`	`ARE` Special derived unit -- temporarily accepted for use with the SI -- for the quantity of area.
`static Unit`	`BAR` Special derived unit -- temporarily accepted for use with the SI -- for the quantity of pressure.
`static Unit`	`BARN` Special derived unit -- temporarily accepted for use with the SI -- for the quantity of area.
`static Unit`	`BECQUEREL` Special derived unit for the quantity of activity of a radionuclide.
`static BaseUnit`	`CANDELA` Base unit of luminous intensity.
`static Unit`	`COULOMB` Special derived unit for the quantity of electric charge or quantity of electricity.
`static Unit`	`CURIE` Special derived unit -- temporarily accepted for use with the SI until the year 2000 according to the USA National Institute of Standards and Technology -- for the quantity of activity of a radionuclide.
`static Unit`	`DAY` Special derived unit -- accepted for use with the SI -- for the quantity of time.
`static Unit`	`DEGREE_CELSIUS` Special derived unit for the quantity of Celsius temperature.
`static Unit`	`ELECTRIC_CURRENT_UNIT` The unit corresponding to the quantity of electric current.
`static Unit`	`FARAD` Special derived unit for the quantity of electric capacitance.
`static Unit`	`GAL` Special derived unit -- temporarily accepted for use with the SI -- for the quantity of acceleration.
`static Unit`	`GRAY` Special derived unit for the quantity of absorbed dose, specific energy (imparted), or kerms.
`static Unit`	`HECTARE` Special derived unit -- temporarily accepted for use with the SI -- for the quantity of area.
`static Unit`	`HENRY` Special derived unit for the quantity of inductance.
`static Unit`	`HERTZ` Special derived unit for the quantity of frequency.
`static Unit`	`HOUR` Special derived unit -- accepted for use with the SI -- for the quantity of time.
`static Unit`	`JOULE` Special derived unit for the quantity of energy, work, or quantity of heat.
`static BaseUnit`	`KELVIN` Base unit of thermodynamic temperature.
`static BaseUnit`	`KILOGRAM` Base unit of mass.
`static Unit`	`KNOT` Special derived unit -- temporarily accepted for use with the SI -- for the quantity of speed.
`static Unit`	`LENGTH_UNIT` The unit corresponding to the quantity of length.
`static Unit`	`LITER` Special derived unit -- accepted for use with the SI -- for the quantity of volume.
`static Unit`	`LITRE` Synomym for `LITER`.
`static Unit`	`LUMEN` Special derived unit for the quantity of luminous flux.
`static Unit`	`LUMINOUS_INTENSITY_UNIT` The unit corresponding to the quantity of luminous intensity.
`static Unit`	`LUX` Special derived unit for the quantity of illuminance.
`static Unit`	`MASS_UNIT` The unit corresponding to the quantity of mass.
`static BaseUnit`	`METER` Base unit of length.
`static BaseUnit`	`METRE` Synonym for `METER`.
`static Unit`	`METRIC_TON` Special derived unit -- accepted for use with the SI -- for the quantity of mass.
`static Unit`	`MINUTE` Special derived unit -- accepted for use with the SI -- for the quantity of time.
`static BaseUnit`	`MOLE` Base unit of amount of substance.
`static Unit`	`NAUTICAL_MILE` Special derived unit -- temporarily accepted for use with the SI -- for the quantity of length.
`static Unit`	`NEWTON` Special derived unit for the quantity of force.
`static Unit`	`OHM` Special derived unit for the quantity of electric resistance.
`static Unit`	`PASCAL` Special derived unit for the quantity of pressure or stress.
`static Unit`	`PLANE_ANGLE_UNIT` The unit corresponding to the quantity of plane angle.
`static Unit`	`RAD` Special derived unit -- temporarilty accepted for use with the SI until the year 2000 according to the USA National Institute of Standards and Technology -- for the quantity of absorbed dose.
`static BaseUnit`	`RADIAN` Base unit of angular measure.
`static Unit`	`REM` Special derived unit -- temporarilty accepted for use with the SI until the year 2000 according to the USA National Institute of Standards and Technology -- for the quantity of equivalent absorbed dose.
`static Unit`	`ROENTGEN` Special derived unit -- temporarily accepted for use with the SI until the year 2000 according to the USA National Institute of Standards and Technology -- for the quantity of electric charge per mass.
`static BaseUnit`	`SECOND` Base unit of time.
`static Unit`	`SIEMENS` Special derived unit for the quantity of electric conductance.
`static Unit`	`SIEVERT` Special derived unit for the quantity of dose equivalent, ambient dose equivalent, directional dose equivalent, personal dose equivalent, or equivalent dose.
`static Unit`	`SOLID_ANGLE_UNIT` The unit corresponding to the quantity of solid angle.
`static BaseUnit`	`STERADIAN` Base unit of solid angle.
`static Unit`	`TESLA` Special derived unit for the quantity of magnetic flux density.
`static Unit`	`THERMODYNAMIC_TEMPERATURE_UNIT` The unit corresponding to the quantity of thermodynamic temperature.
`static Unit`	`TIME_UNIT` The unit corresponding to the quantity of time.
`static Unit`	`TONNE` Synomym for `METRIC_TON`.
`static Unit`	`VOLT` Special derived unit for the quantity of electric potential, potential difference, or electromotive force.
`static Unit`	`WATT` Special derived unit for the quantity of power or radiant flux.
`static Unit`	`WEBER` Special derived unit for the quantity of magnetic flux.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static SI`	`instance()` Returns an instance of the SI system of units.
`static void`	`main(java.lang.String[] args)` Tests this class.

Methods inherited from class ucar.units.UnitSystemImpl
getBaseUnit, getBaseUnitDB, getUnitDB

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - AMOUNT_OF_SUBSTANCE_UNIT
```
public static final Unit AMOUNT_OF_SUBSTANCE_UNIT
```
    The unit corresponding to the quantity of amount of substance.
  - ELECTRIC_CURRENT_UNIT
```
public static final Unit ELECTRIC_CURRENT_UNIT
```
    The unit corresponding to the quantity of electric current.
  - LENGTH_UNIT
```
public static final Unit LENGTH_UNIT
```
    The unit corresponding to the quantity of length.
  - LUMINOUS_INTENSITY_UNIT
```
public static final Unit LUMINOUS_INTENSITY_UNIT
```
    The unit corresponding to the quantity of luminous intensity.
  - MASS_UNIT
```
public static final Unit MASS_UNIT
```
    The unit corresponding to the quantity of mass.
  - PLANE_ANGLE_UNIT
```
public static final Unit PLANE_ANGLE_UNIT
```
    The unit corresponding to the quantity of plane angle.
  - SOLID_ANGLE_UNIT
```
public static final Unit SOLID_ANGLE_UNIT
```
    The unit corresponding to the quantity of solid angle.
  - THERMODYNAMIC_TEMPERATURE_UNIT
```
public static final Unit THERMODYNAMIC_TEMPERATURE_UNIT
```
    The unit corresponding to the quantity of thermodynamic temperature.
  - TIME_UNIT
```
public static final Unit TIME_UNIT
```
    The unit corresponding to the quantity of time.
  - AMPERE
```
public static final BaseUnit AMPERE
```
    Base unit of electric current. The ampere is that constant current which, if maintained in two straight parallel conductors of infinite length, of negligible circular cross section, and placed 1 meter apart in vacuum, would produce between these conductors a force equal to 2 x 10^-7 newton per meter of length.
  - CANDELA
```
public static final BaseUnit CANDELA
```
    Base unit of luminous intensity. The candela is the luminous intensity, in a given direction, of a source that emits monochromatic radiation of frequency 540 x 10^12 hertz and that has a radiant intensity in that direction of (1/683) watt per steradian.
  - KELVIN
```
public static final BaseUnit KELVIN
```
    Base unit of thermodynamic temperature. The kelvin, unit of thermodynamic temperature, is the fraction 1/273.16 of the thermodynamic temperature of the triple point of water.
  - KILOGRAM
```
public static final BaseUnit KILOGRAM
```
    Base unit of mass. The kilogram is the unit of mass; it is equal to the mass of the international prototype of the kilogram.
  - METER
```
public static final BaseUnit METER
```
    Base unit of length. The meter is the length of the path travelled by light in vacuum during a time interval of 1/299 792 458 of a second.
  - METRE
```
public static final BaseUnit METRE
```
    Synonym for METER.
  - MOLE
```
public static final BaseUnit MOLE
```
    Base unit of amount of substance. The mole is the amount of substance of a system which contains as many elementary entities as there are atoms in 0.012 kilogram of carbon 12.
  - SECOND
```
public static final BaseUnit SECOND
```
    Base unit of time. The second is the duration of 9 192 631 770 periods of the radiation corresponding to the trasition between the two hyperfine levels of the ground state of the cesium-133 atom.
  - RADIAN
```
public static final BaseUnit RADIAN
```
    Base unit of angular measure. The radian is the plane angle between two radii of a circle that cut off on the circumference an arc equal in length to the radius.
  - STERADIAN
```
public static final BaseUnit STERADIAN
```
    Base unit of solid angle. The steradian is the solid angle that, having its vertex in the center of a sphere, cuts off an area on the surface of the sphere equal to that of a square with sides of length equal to the radius of the sphere.
  - HERTZ
```
public static final Unit HERTZ
```
    Special derived unit for the quantity of frequency.
  - NEWTON
```
public static final Unit NEWTON
```
    Special derived unit for the quantity of force.
  - PASCAL
```
public static final Unit PASCAL
```
    Special derived unit for the quantity of pressure or stress.
  - JOULE
```
public static final Unit JOULE
```
    Special derived unit for the quantity of energy, work, or quantity of heat.
  - WATT
```
public static final Unit WATT
```
    Special derived unit for the quantity of power or radiant flux.
  - COULOMB
```
public static final Unit COULOMB
```
    Special derived unit for the quantity of electric charge or quantity of electricity.
  - VOLT
```
public static final Unit VOLT
```
    Special derived unit for the quantity of electric potential, potential difference, or electromotive force.
  - FARAD
```
public static final Unit FARAD
```
    Special derived unit for the quantity of electric capacitance.
  - OHM
```
public static final Unit OHM
```
    Special derived unit for the quantity of electric resistance.
  - SIEMENS
```
public static final Unit SIEMENS
```
    Special derived unit for the quantity of electric conductance.
  - WEBER
```
public static final Unit WEBER
```
    Special derived unit for the quantity of magnetic flux.
  - TESLA
```
public static final Unit TESLA
```
    Special derived unit for the quantity of magnetic flux density.
  - HENRY
```
public static final Unit HENRY
```
    Special derived unit for the quantity of inductance.
  - DEGREE_CELSIUS
```
public static final Unit DEGREE_CELSIUS
```
    Special derived unit for the quantity of Celsius temperature.
  - LUMEN
```
public static final Unit LUMEN
```
    Special derived unit for the quantity of luminous flux.
  - LUX
```
public static final Unit LUX
```
    Special derived unit for the quantity of illuminance.
  - BECQUEREL
```
public static final Unit BECQUEREL
```
    Special derived unit for the quantity of activity of a radionuclide.
  - GRAY
```
public static final Unit GRAY
```
    Special derived unit for the quantity of absorbed dose, specific energy (imparted), or kerms.
  - SIEVERT
```
public static final Unit SIEVERT
```
    Special derived unit for the quantity of dose equivalent, ambient dose equivalent, directional dose equivalent, personal dose equivalent, or equivalent dose.
  - MINUTE
```
public static final Unit MINUTE
```
    Special derived unit -- accepted for use with the SI -- for the quantity of time.
  - HOUR
```
public static final Unit HOUR
```
    Special derived unit -- accepted for use with the SI -- for the quantity of time.
  - DAY
```
public static final Unit DAY
```
    Special derived unit -- accepted for use with the SI -- for the quantity of time.
  - ARC_DEGREE
```
public static final Unit ARC_DEGREE
```
    Special derived unit -- accepted for use with the SI -- for the quantity of plane angle.
  - ARC_MINUTE
```
public static final Unit ARC_MINUTE
```
    Special derived unit -- accepted for use with the SI -- for the quantity of plane angle.
  - ARC_SECOND
```
public static final Unit ARC_SECOND
```
    Special derived unit -- accepted for use with the SI -- for the quantity of plane angle.
  - LITER
```
public static final Unit LITER
```
    Special derived unit -- accepted for use with the SI -- for the quantity of volume.
  - LITRE
```
public static final Unit LITRE
```
    Synomym for LITER.
  - METRIC_TON
```
public static final Unit METRIC_TON
```
    Special derived unit -- accepted for use with the SI -- for the quantity of mass.
  - TONNE
```
public static final Unit TONNE
```
    Synomym for METRIC_TON.
  - NAUTICAL_MILE
```
public static final Unit NAUTICAL_MILE
```
    Special derived unit -- temporarily accepted for use with the SI -- for the quantity of length.
  - KNOT
```
public static final Unit KNOT
```
    Special derived unit -- temporarily accepted for use with the SI -- for the quantity of speed.
  - ANGSTROM
```
public static final Unit ANGSTROM
```
    Special derived unit -- temporarily accepted for use with the SI -- for the quantity of length.
  - ARE
```
public static final Unit ARE
```
    Special derived unit -- temporarily accepted for use with the SI -- for the quantity of area.
  - HECTARE
```
public static final Unit HECTARE
```
    Special derived unit -- temporarily accepted for use with the SI -- for the quantity of area.
  - BARN
```
public static final Unit BARN
```
    Special derived unit -- temporarily accepted for use with the SI -- for the quantity of area.
  - BAR
```
public static final Unit BAR
```
    Special derived unit -- temporarily accepted for use with the SI -- for the quantity of pressure.
  - GAL
```
public static final Unit GAL
```
    Special derived unit -- temporarily accepted for use with the SI -- for the quantity of acceleration.
  - CURIE
```
public static final Unit CURIE
```
    Special derived unit -- temporarily accepted for use with the SI until the year 2000 according to the USA National Institute of Standards and Technology -- for the quantity of activity of a radionuclide.
  - ROENTGEN
```
public static final Unit ROENTGEN
```
    Special derived unit -- temporarily accepted for use with the SI until the year 2000 according to the USA National Institute of Standards and Technology -- for the quantity of electric charge per mass.
  - RAD
```
public static final Unit RAD
```
    Special derived unit -- temporarilty accepted for use with the SI until the year 2000 according to the USA National Institute of Standards and Technology -- for the quantity of absorbed dose.
  - REM
```
public static final Unit REM
```
    Special derived unit -- temporarilty accepted for use with the SI until the year 2000 according to the USA National Institute of Standards and Technology -- for the quantity of equivalent absorbed dose.
- Method Detail
  - instance
```
public static SI instance()
                   throws UnitSystemException
```
    Returns an instance of the SI system of units.
    
    Returns:
    
    An instance of the SI system of units.
    
    Throws:
    
    UnitSystemException - Couldn't create an instance of the SI system of units.
  - main
```
public static void main(java.lang.String[] args)
                 throws java.lang.Exception
```
    Tests this class.
    
    Throws:
    
    java.lang.Exception

Class SI

Field Summary

Method Summary

Methods inherited from class ucar.units.UnitSystemImpl

Methods inherited from class java.lang.Object

Field Detail

AMOUNT_OF_SUBSTANCE_UNIT

ELECTRIC_CURRENT_UNIT

LENGTH_UNIT

LUMINOUS_INTENSITY_UNIT

MASS_UNIT

PLANE_ANGLE_UNIT

SOLID_ANGLE_UNIT

THERMODYNAMIC_TEMPERATURE_UNIT

TIME_UNIT

AMPERE

CANDELA

KELVIN

KILOGRAM

METER

METRE

MOLE

SECOND

RADIAN

STERADIAN

HERTZ

NEWTON

PASCAL

JOULE

WATT

COULOMB

VOLT

FARAD

OHM

SIEMENS

WEBER

TESLA

HENRY

DEGREE_CELSIUS

LUMEN

LUX

BECQUEREL

GRAY

SIEVERT

MINUTE

HOUR

DAY

ARC_DEGREE

ARC_MINUTE

ARC_SECOND

LITER

LITRE

METRIC_TON

TONNE

NAUTICAL_MILE

KNOT

ANGSTROM

ARE

HECTARE

BARN

BAR

GAL

CURIE

ROENTGEN

RAD

REM

Method Detail

instance

main