visad

Class SI

java.lang.Object

visad.SI

All Implemented Interfaces:

Serializable

public final class SI
extends Object
implements Serializable

A class that represents the SI system of units.

Author:

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

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
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

Modifier and Type	Method and Description
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

ampere

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.

candela

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.

kelvin

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.

kilogram

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.

meter

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.

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.

mole

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.

radian

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.

steradian

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

main

public static void main(String[] args)

Test this class.

Parameters:

args - Arguments (ignored).