Class SI

  extended by visad.SI
All Implemented Interfaces:

public final class SI
extends Object
implements Serializable

A class that represents the SI system of units.

Steven R. Emmerson This is part of Steve Emerson's Unit package that has been incorporated into VisAD.
See Also:
Serialized Form

Field Summary
static BaseUnit ampere
          Base unit of electric current.
static BaseUnit candela
          Base unit of luminous intensity.
static BaseUnit kelvin
          Base unit of thermodynamic temperature.
static BaseUnit kilogram
          Base unit of mass.
static BaseUnit meter
          Base unit of length.
static BaseUnit mole
          Base unit of amount of substance.
static BaseUnit radian
          Base unit of angular measure.
static BaseUnit second
          Base unit of time.
static BaseUnit steradian
          Base unit of solid angle.
Method Summary
static void main(String[] args)
          Test this class.
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail


public static 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.


public static 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.


public static 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.


public static 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.


public static 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.


public static 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.


public static 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.


public static 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. This unit is dimensionless.


public static 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 of the surface equal to that of a square with sides of length equal to the radius of the sphere. This unit is dimensionless.

Method Detail


public static void main(String[] args)
Test this class.

args - Arguments (ignored).