quantity library

A superset of all the other libraries available in the quantity package. Import this library to have access to all the quantity types, units and constants defined in this package. Alternatively, import only the quantity_si library to stick to the types and units consistent with the International System of Units (SI).

Classes

AbsorbedDose: The mean energy imparted to matter per unit mass by ionizing radiation. See the Wikipedia entry for Absorbed Dose for more information.
AbsorbedDoseRate: The rate of mean energy imparted to matter per unit mass by ionizing radiation. See the Wikipedia entry for Absorbed Dose for more information.
AbsorbedDoseRateUnits: Units acceptable for use in describing AbsorbedDoseRate quantities.
AbsorbedDoseUnits: Units acceptable for use in describing AbsorbedDose quantities.
Acceleration: The rate of change of speed of an object. See the Wikipedia entry for Acceleration for more information.
AccelerationUnits: Units acceptable for use in describing Acceleration quantities.
Activity: A measure of the effective concentration of a species in a mixture. See the Wikipedia entry for Thermodynamic activity for more information.
ActivityUnits: Units acceptable for use in describing Activity quantities.
AmountOfSubstance: The size of an ensemble of elementary entities, such as atoms, molecules, electrons, and other particles. See the Wikipedia entry for Amount of substance for more information.
AmountOfSubstanceUnits: Units acceptable for use in describing AmountOfSubstance quantities.
Angle: A planar (2-dimensional) angle, which has dimensions of 1 and is a measure of the ratio of the length of a circular arc to its radius.
AngleRange: An immutable angle range with a start angle, an end angle and an implicit direction.
AngleUnits: Units acceptable for use in describing Angle quantities.
AngularAcceleration: The rate of change of angular speed. See the Wikipedia entry for Angular acceleration for more information.
AngularAccelerationUnits: Units acceptable for use in describing AngularAcceleration quantities.
AngularMomentum: A measure of the quantity of rotation of a system of matter, taking into account its mass, rotations, motions and shape. See the Wikipedia entry for Angular momentum for more information.
AngularMomentumUnits: Units acceptable for use in describing AngularMomentum quantities.
AngularSpeed: The rate of change of an angle. See the Wikipedia entry for Angular_velocity for more information.
AngularSpeedUnits: Units acceptable for use in describing AngularSpeed quantities.
Area: The extent of a two-dimensional figure or shape. See the Wikipedia entry for Area for more information.
AreaUnits: Units acceptable for use in describing Area quantities.
Binary: Represents an integer as a binary number.
CalendarYear: The period of 365 days (or 366 days in leap years) starting from the first of January; used for reckoning time in ordinary affairs.
Capacitance: The ability of a body to store an electrical charge, See the Wikipedia entry for Capacitance for more information.
CapacitanceUnits: Units acceptable for use in describing Capacitance quantities.
CatalyticActivity: The increase in rate of a chemical reaction caused by the presence of a catalyst. See the Wikipedia entry for Catalysis for more information.
CatalyticActivityUnits: Units acceptable for use in describing CatalyticActivity quantities.
Charge: The property of matter that causes it to experience a force when placed in an electromagnetic field See the Wikipedia entry for Electric charge for more information.
ChargeDensity: Electric charge per unit volume of space. See the Wikipedia entry for Charge density for more information.
ChargeDensityUnits: Units acceptable for use in describing ChargeDensity quantities.
ChargeUnits: Units acceptable for use in describing Charge quantities.
Complex: Complex numbers have both a real and an imaginary part.
Concentration: The abundance of a constituent divided by the total volume of a mixture. See the Wikipedia entry for Concentration for more information.
ConcentrationUnits: Units acceptable for use in describing Concentration quantities.
Conductance: The ease with which an electric current passes through a conductor (the inverse of Resistance). See the Wikipedia entry for Electrical resistance and conductance for more information.
ConductanceUnits: Units acceptable for use in describing Conductance quantities.
Currency: Money in any form when in actual use or circulation as a medium of exchange. See the Wikipedia entry for Currency for more information.
CurrencyUnits: Units acceptable for use in describing Currency quantities.
Current: The flow of electric charge. See the Wikipedia entry for Electric current for more information.
CurrentDensity: The electric current per unit area of cross section. See the Wikipedia entry for Current density for more information.
CurrentDensityUnits: Units acceptable for use in describing CurrentDensity quantities.
CurrentUnits: Units acceptable for use in describing Current quantities.
Digit: Represents a digit in four bits of a single byte. This wastes four bits but that's a decent trade-off for simplicity and better anyway than the 4+ bytes allocated for a regular int.
Dimensions: The Dimensions class represents the dimensions of a physical quantity.
DoseEquivalent: Represents the stochastic health effects (probability of cancer induction and genetic damage) of ionizing radiation on the human body. See the Wikipedia entry for Equivalent dose for more information.
DoseEquivalentUnits: Units acceptable for use in describing DoseEquivalent quantities.
Double: Wraps Dart's core double type, so that it can share a common base type with other Numbers.
DynamicViscosity: A measure of a fluid's resistance to gradual deformation by shear stress or tensile stress. See the Wikipedia entry for Viscosity for more information.
DynamicViscosityUnits: Units acceptable for use in describing DynamicViscosity quantities.
ElectricFieldStrength: The magnitude of the force per unit charge that an electric field exerts. See the Wikipedia entry for Electric field for more information.
ElectricFieldStrengthUnits: Units acceptable for use in describing ElectricFieldStrength quantities.
ElectricFluxDensity: A measure of the intensity of an electric field generated by a free electric charge, corresponding to the number of electric field lines passing through a given area. See the Wikipedia entry for Electric_flux for more information.
ElectricFluxDensityUnits: Units acceptable for use in describing ElectricFluxDensity quantities.
ElectricPotentialDifference: The difference in electric potential energy between two points per unit electric charge See the Wikipedia entry for Voltage for more information.
ElectricPotentialDifferenceUnits: Units acceptable for use in describing ElectricPotentialDifference quantities.
Energy: The ability of a system to perform work; cannot be created or destroyed but can take many forms. See the Wikipedia entry for Energy for more information.
EnergyDensity: The amount of energy stored in a given system or region of space per unit volume. See the Wikipedia entry for Energy density for more information.
EnergyDensityUnits: Units acceptable for use in describing EnergyDensity quantities.
EnergyFlux: The rate of transfer of energy through a surface. See the Wikipedia entry for Energy density for more information.
EnergyFluxUnits: Units acceptable for use in describing EnergyFlux quantities.
EnergyUnits: Units acceptable for use in describing Energy quantities.
EngineeringFormatSI: A version of scientific notation in which the exponent of ten must be divisible by three (e.g., 123.345 x 10^3).
Entropy: The number of specific ways in which a thermodynamic system may be arranged, commonly understood as a measure of disorder. See the Wikipedia entry for Entropy for more information.
EntropyUnits: Units acceptable for use in describing Entropy quantities.
Exposure: The radiant energy received by a surface per unit area. See the Wikipedia entry for Radiant exposure for more information.
ExposureUnits: Units acceptable for use in describing Exposure quantities.
FieldLevel: Represents a level of a field quantity, a logarithmic quantity. Level of a field quantity is defined as ln(F/F0), where F/F0 is the ratio of two field quantities and F0 is a reference amplitude of the appropriate type.
FiscalYear: Constructs a FiscalYear time period.
Force: Any interaction that, when unopposed, changes the motion of an object. See the Wikipedia entry for Force for more information.
ForceUnits: Units acceptable for use in describing Force quantities.
Fraction: A convenient way to represent fractional numbers.
Frequency: The number of occurrences of a repeating event per unit time. See the Wikipedia entry for Frequency for more information.
FrequencyUnits: Units acceptable for use in describing Frequency quantities.
HeatFluxDensity: Heat rate per unit area. See the Wikipedia entry for Heat flux for more information.
HeatFluxDensityUnits: Units acceptable for use in describing HeatFluxDensity quantities.
Hexadecimal: Represents an integer as a hexadecimal number.
Illuminance: The total luminous flux incident on a surface, per unit area. See the Wikipedia entry for Illuminance for more information.
IlluminanceUnits: Units acceptable for use in describing Illuminance quantities.
Imaginary: Represents an imaginary number, defined as a number whose square is negative one.
Inductance: The property of an electrical conductor by which a change in current flowing through it induces an electromotive force in both the conductor itself and in any nearby conductors by mutual inductance. See the Wikipedia entry for Inductance for more information.
InductanceUnits: Units acceptable for use in describing Inductance quantities.
Information: Amount of data. See the Wikipedia entry for Information for more information.
InformationRate: The flow of information, per unit time. See the Wikipedia entry for Information for more information.
InformationRateUnits: Units acceptable for use in describing InformationRate quantities.
InformationUnits: Units acceptable for use in describing Information quantities.
Integer: Wraps Dart's core int type, so that it can share a common base type with other Numbers.
KinematicViscosity: The resistance to flow of a fluid, equal to its absolute viscosity divided by its density. See the Wikipedia entry for Viscosity for more information.
KinematicViscosityUnits: Units acceptable for use in describing KinematicViscosity quantities.
Length: Represents the length physical quantity (one of the seven base SI quantities). See the Wikipedia entry for Length for more information.
LengthUnits: Units acceptable for use in describing Length quantities.
Level: Represents logarithmic physical quantities and has dimensions of 1 (Scalar). Level of a field quantity and level of a power quantity are two common logarithmic quantities.
LevelUnits: Units acceptable for use in describing Level quantities.
Luminance: The intensity of light emitted from a surface per unit area. See the Wikipedia entry for Luminance for more information.
LuminanceUnits: Units acceptable for use in describing Luminance quantities.
LuminousFlux: The perceived power of light. It differs from radiant flux, the measure of the total power of electromagnetic radiation (including infrared, ultraviolet, and visible light), in that luminous flux is adjusted to reflect the varying sensitivity of the human eye to different wavelengths of light See the Wikipedia entry for Luminance for more information.
LuminousFluxUnits: Units acceptable for use in describing LuminousFlux quantities.
LuminousIntensity: Represents the luminous intensity physical quantity (one of the seven base SI quantities), the wavelength-weighted power emitted by a light source in a particular direction per unit solid angle. See the Wikipedia entry for Luminous intensity for more information.
LuminousIntensityUnits: Units acceptable for use in describing LuminousIntensity quantities.
MagneticFieldStrength: The intensity of a magnetic field. See the Wikipedia entry for Magnetic field for more information.
MagneticFieldStrengthUnits: Units acceptable for use in describing MagneticFieldStrength quantities.
MagneticFlux: The magnetic flux density passing through a closed surface. See the Wikipedia entry for Magnetic flux for more information.
MagneticFluxDensity: The amount of magnetic flux in an area taken perpendicular to a magnetic flux's direction See the Wikipedia entry for Magnetic flux for more information.
MagneticFluxDensityUnits: Units acceptable for use in describing MagneticFluxDensity quantities.
MagneticFluxUnits: Units acceptable for use in describing MagneticFlux quantities.
Mass: Represents the mass physical quantity (one of the seven base SI quantities), that determines the strength of a body's mutual gravitational attraction to other bodies. See the Wikipedia entry for Mass for more information.
MassDensity: Mass per unit volume. See the Wikipedia entry for Density for more information.
MassDensityUnits: Units acceptable for use in describing MassDensity quantities.
MassFlowRate: The mass of a substance which passes per unit of time. See the Wikipedia entry for Mass flow rate for more information.
MassFlowRateUnits: Units acceptable for use in describing MassFlowRate quantities.
MassFluxDensity: The mass of a substance which passes per unit of time. See the Wikipedia entry for Mass flow rate for more information.
MassFluxDensityUnits: Units acceptable for use in describing MassFluxDensity quantities.
MassUnits: Units acceptable for use in describing Mass quantities.
MiscQuantity: A MiscQuantity is a general (miscellaneous) Quantity having arbitrary dimensions (including possibly the same dimensions as a named Quantity subclass). MiscQuantity objects may be used, for example, in less common domains or as intermediate results in equations.
MolarEnergy: Energy per mole of a substance. See the Wikipedia entry for Specific energy for more information.
MolarEnergyUnits: Units acceptable for use in describing MolarEnergy quantities.
MolarEntropy: Entropy content per mole of substance. See the Wikipedia entry for Standard molar entropy for more information.
MolarEntropyUnits: Units acceptable for use in describing MolarEntropy quantities.
MutableQuantity: MutableQuantity supports updates to its value, dimensions and uncertainty. Changes are broadcast over the onChange stream.
Number: The abstract base class for all Number types.
NumberFormatSI: NumberFormatSI implements the International System of Units (SI) style conventions for displaying values of quantities. Specifically:
Octal: Represents an integer as an octal number.
Permeability: The ability of a material to support the formation of a magnetic field within itself. See the Wikipedia entry for Permeability (electromagnetism) for more information.
PermeabilityUnits: Units acceptable for use in describing Permeability quantities.
Permittivity: The resistance that is encountered when forming an electric field in a medium. See the Wikipedia entry for Permittivity for more information.
PermittivityUnits: Units acceptable for use in describing Permittivity quantities.
Power: Amount of energy per unit time. See the Wikipedia entry for Power (physics) for more information.
PowerLevel: Represents a level of a power quantity, a logarithmic quantity. Level of a power quantity is defined as 0.5*ln(P/P0), where P/P0 is the ratio of two powers and P0 is a reference power.
PowerUnits: Units acceptable for use in describing Power quantities.
Precise: Precise represents an arbitrary precision number.
Pressure: Force applied perpendicular to the surface of an object per unit area over which that force is distributed. See the Wikipedia entry for Pressure for more information.
PressureUnits: Units acceptable for use in describing Pressure quantities.
Quantity: The abstract base class for all quantities. The Quantity class represents the value of a physical quantity and its associated dimensions. It provides methods for constructing and getting the quantity's value in arbitrary units, methods for mathematical manipulation and comparison and optional features such as arbitrary precision and uncertainty.
QuantityRange<Q extends Quantity>: Represents a range of quantity values.
Radiance: The radiant flux emitted, reflected, transmitted or received by a surface, per unit solid angle per unit projected area. See the Wikipedia entry for Radiance for more information.
RadianceUnits: Units acceptable for use in describing Radiance quantities.
RadiantFlux: Radiant flux is another way to express power.
RadiantIntensity: The radiant flux emitted, reflected, transmitted or received, per unit solid angle. See the Wikipedia entry for Radiant intensity for more information.
RadiantIntensityUnits: Units acceptable for use in describing RadiantIntensity quantities.
Real: Provides a common handle for all Real Numbers.
Resistance: A measure of the difficulty passing an electric current through a conductor. See the Wikipedia entry for Electrical resistance and conductance for more information.
ResistanceUnits: Units acceptable for use in describing Resistance quantities.
Scalar: A one-dimensional physical quantity that can be described by a single real number. See the Wikipedia entry for Scalar (physics) for more information.
ScalarUnits: Units acceptable for use in describing Scalar quantities.
ScientificFormatSI: Formats a number as a single integer digit, followed by decimal digits and raised to a power of 10 (e.g., 1.2345 x 10^3).
SolidAngle: A two-dimensional angle in three-dimensional space that an object subtends at a point. See the Wikipedia entry for Solid angle for more information.
SolidAngleUnits: Units acceptable for use in describing SolidAngle quantities.
SpecificEnergy: Energy per unit mass. See the Wikipedia entry for Specific energy for more information.
SpecificEnergyUnits: Units acceptable for use in describing SpecificEnergy quantities.
SpecificHeatCapacity: The heat capacity per unit mass of a material. See the Wikipedia entry for Heat capacity for more information.
SpecificHeatCapacityUnits: Units acceptable for use in describing SpecificHeatCapacity quantities.
SpecificVolume: The ratio of the substance's volume to its mass. See the Wikipedia entry for Specific volume for more information.
SpecificVolumeUnits: Units acceptable for use in describing SpecificVolume quantities.
SpectralIrradiance: Irradiance of a surface per unit frequency. See the Wikipedia entry for Radiometry for more information.
SpectralIrradianceUnits: Units acceptable for use in describing SpectralIrradiance quantities.
Speed: The rate of change of position. See the Wikipedia entry for Speed for more information.
SpeedUnits: Units acceptable for use in describing Speed quantities.
SurfaceTension: The elastic tendency of liquids which makes them acquire the least surface area possible. See the Wikipedia entry for Surface tension for more information.
SurfaceTensionUnits: Units acceptable for use in describing SurfaceTension quantities.
Temperature: An objective comparative measure of hot or cold. See the Wikipedia entry for Thermodynamic temperature for more information.
TemperatureInterval: The difference between two temperatures, where temperature is an objective comparative measure of hot or cold. See the Wikipedia entry for Thermodynamic temperature for more information.
TemperatureIntervalUnits: Units acceptable for use in describing TemperatureInterval quantities.
TemperatureUnits: Units acceptable for use in describing Temperature quantities.
ThermalConductivity: The ability of a material to conduct heat. See the Wikipedia entry for Thermal conductivity for more information.
ThermalConductivityUnits: Units acceptable for use in describing ThermalConductivity quantities.
Time: Represents the time interval physical quantity (one of the seven base SI quantities).
TimeInstant: TimeInstant represents a specific moment in time and its units enable conversion between various time scales.
TimeInstantUnits: Units acceptable for use in describing TimeInstant quantities.
TimePeriod: Represents a specific time span.
TimeUnits: Units acceptable for use in describing Time quantities.
Torque: The tendency of a force to rotate an object about an axis, fulcrum, or pivot. See the Wikipedia entry for Torque for more information.
TorqueUnits: Units acceptable for use in describing Torque quantities.
Volume: The amount of three-dimensional space enclosed by some closed boundary. See the Wikipedia entry for Volume for more information.
VolumeFlowRate: The volume of fluid which passes per unit time. See the Wikipedia entry for Volumetric flow rate for more information.
VolumeFlowRateUnits: Units acceptable for use in describing VolumeFlowRate quantities.
VolumeUnits: Units acceptable for use in describing Volume quantities.
WaveNumber: The spatial frequency of a wave. See the Wikipedia entry for Wavenumber for more information.
WaveNumberUnits: Units acceptable for use in describing WaveNumber quantities.

Enums

UncertaintyFormat: Whether and how to display a quantity's uncertainty (e.g., compact is 32.324(12), not compact is (32.324 +/- 0.012)).

Mixins

Units: A unit is a particular physical quantity, defined and adopted by convention, with which other particular quantities of the same kind (dimensions) are compared to express their value.

Constants

alphaParticleMass → const Mass: The rest mass of a helium nucleus.
angstromStar → const Length: Often used to represent the wavelengths of X rays and the distances between atoms in crystals.
atomicMass → const Mass: One twelfth of the mass of a carbon-12 atom in its nuclear and electronic ground state.
bohrRadius → const Length: The mean radius of the orbit of an electron around the nucleus of a hydrogen atom at its ground state.
boltzmannConstant → const Entropy: The Boltzmann constant is a physical constant that relates the average relative kinetic energy of particles in a gas with the temperature of the gas.
characteristicImpedanceOfVacuum → const Resistance: Relates the magnitudes of the electric and magnetic fields of electromagnetic radiation travelling through free space.
classicalElectronRadius → const Length: The classical electron radius is a combination of fundamental physical quantities that define a length scale for problems involving an electron interacting with electromagnetic radiation.
comptonWavelength → const Length: The wavelength of a photon whose energy is the same as the mass energy equivalent of that particle.
conductanceQuantum → const Conductance: The quantized unit of electrical conductance. It appears when measuring the conductance of a quantum point contact, and, more generally, is a key component of Landauer formula which relates the electrical conductance of a quantum conductor to its quantum properties.
cos0 → const double: The cosine of a ninety degree angle (1).
cos60 → const double: The cosine of a sixty degree angle (0.5).
cos90 → const double: The cosine of a ninety degree angle (1).
deuteronMass → const Mass: The mass of a stationary deuteron.
electronGFactor → const Scalar: Electron g factor (ge).
electronMass → const Mass: The mass of a stationary electron.
elementaryCharge → const Charge: The electric charge carried by a single proton.
expUnicodeMap → const Map<String, String>: Maps a digit, decimal point or minus sign string to a unicode exponent character.
fineStructureConstant → const Scalar: Fine structure constant (alpha).
fiveNinths → const double: A ratio used in the conversion between metric temperature scales and Fahrenheit.
hartreeEnergy → const Energy: The Hartree atomic unit of energy is the energy for the separation of a molecule to nuclei and electrons.
hBar → const AngularMomentum: The Planck constant divided by 2 PI (a.k.a., 'h-bar' or 'reduced Planck constant').
helionMass → const Mass: The mass of a stationary helion.
lengthZero → const Length: A constant representing zero length.
magneticFluxQuantum → const MagneticFlux: The magnetic flux quantum constant is a combination of two other physical constants: the Planck constant h and the electron charge e. Its value is, therefore, the same for any superconductor.
muonGFactor → const Scalar: Muon g factor (gn).
muonMass → const Mass: The mass of a stationary muon particle.
naught → const Scalar: A synonym for zero.
neutronGFactor → const Scalar: Neutron g factor (gn).
neutronMass → const Mass: The mass of a stationary neutron.
planckConstant → const AngularMomentum: The Planck constant.
planckLength → const Length: The threshold length at which classical ideas about gravity and space-time cease to be valid and quantum effects dominate.
planckMass → const Mass: The unit of mass in the system of natural units known as Planck units. It is approximately 0.02 milligrams.
planckTemperature → const Temperature: Contemporary models of physical cosmology postulate that the highest possible temperature is the Planck temperature.
planckTime → const Time: The time required for light to travel in a vacuum a distance of one Planck length.
protonGFactor → const Scalar: Proton g factor (gp).
protonMass → const Mass: The mass of a stationary proton.
sackurTetrode100kPa → const Scalar: Sackur-Tetrode constant at 1 K and 100 kPa ('S0/R').
sackurTetrodeStdAtm → const Scalar: Sackur-Tetrode constant at 1 K and 101.325 kPa ('S0/R').
scalarZero → const Scalar: Zero, as a Scalar.
sigma0 → const Area: A synonym for the thomsonCrossSection.
sin0 → const double: The sine of a zero degree angle (0).
sin30 → const double: The sine of a thirty degree angle (0.5).
sin90 → const double: The sine of a ninety degree angle (1).
solarLuminosity → const Power: The solar luminosity constant is the radiant flux (power emitted in the form of photons) emitted by the Sun (a typical value; the Sun's output actually varies slightly over time).
speedOfLightVacuum → const Speed: Speed of light in a vacuum.
speedOfSoundAir0C → const Speed: Speed of sound in air at 0 deg C.
tan0 → const double: The tangent of a zero degree angle (0).
tan45 → const double: The tangent of a forty five degree angle (1).
tau → const double: The "circle constant", equal to two pi.
tauComptonWavelength → const Length: The tau Compton wavelength.
tauMass → const Mass: The mass of a stationary tau particle.
thomsonCrossSection → const Area: Helpful for describing the scattering of photons when the energy of each individual photon is much smaller than the rest energy of the electron.
twoPi → const double: The value 2 * pi, also known as tau.
vacuumElectricPermittivity → const Permittivity: A constant of proportionality that exists between electric displacement and electric field intensity.
vacuumMagneticPermeability → const Permeability: The magnetic permeability in a classical vacuum.
vonKlitzingConstant → const Resistance: Relates Planck's constant and the charge of the electron.
weakMixingAngle → const Scalar: Weak mixing angle.
Z0 → const Resistance: A synonym for characteristicImpedanceOfVacuum.
zilch → const Scalar: A synonym for zero.

Properties

abamperes → CurrentUnits: Abamperes as a unit.
final
abcoulombs → ChargeUnits: A synonym for dekacoulombs.
final
abfarads → CapacitanceUnits: A unit representing one gigafarad.
final
abhenries ↔ InductanceUnits: Abhenries is a synonym for nanohenries.
getter/setter pair
abmho → ConductanceUnits: Equivalent to a billion siemens (or mhos).
final
abvolts ↔ ElectricPotentialDifferenceUnits: The unit of electromotive force (EMF) or potential difference in the CGS (centimeter/gram/second) electromagnetic system of units. When an EMF of 1 abV exists between two points, then one erg of energy is needed to move one abcoulomb (1 abC) of charge carriers between those two points.
getter/setter pair
acreFoot ↔ VolumeUnits: Acre foot as a unit.
getter/setter pair
acres → AreaUnits: An acre is about three-quarters of the size of an American football field.
final
aeons → TimeUnits: A unit of one billion years.
final
allQuantityTypes → Iterable<Type>: Returns an iterable of Type objects representing all of the quantity types supported by this library (for example, Angle, Length, etc.).
no setter
ampereHours → ChargeUnits: Ampere hours as a unit.
final
amperes → CurrentUnits: The standard SI unit.
final
amps → CurrentUnits: A synonym for amperes.
final
angle0 → Angle: A zero degree angle.
final
angle180 → Angle: A one hundred eighty degree angle.
final
angle270 → Angle: A two hundred seventy degree angle.
final
angle30 → Angle: A thirty degree angle.
final
angle360 → Angle: A three hundred sixty degree angle.
final
angle45 → Angle: A forty five degree angle.
final
angle60 → Angle: A sixty degree angle.
final
angle90 → Angle: A ninety degree angle.
final
anglePi → Angle: A one hundred eighty degree angle.
final
angleTau → Angle: A three hundred sixty degree angle.
final
angstromStars → LengthUnits: A non-standard unit of length.
final
angularMils → AngleUnits: One angular mil is 0.05625 of a degree, exactly.
final
ares → AreaUnits: Accepted for use with the SI, subject to further review. Equals one square dekameter, or 100 square meters.
final
astronomicalUnits → LengthUnits: The mean distance from the center of the earth to the center of the sun.
final
atmospheres ↔ PressureUnits: Standard atmospheres as a unit.
getter/setter pair
atmospheresTechnical ↔ PressureUnits: Technical atmospheres as a unit.
getter/setter pair
attometers → LengthUnits: A unit of 10^-18 meters.
final
attoseconds → TimeUnits: 10^-18 of a second.
final
B → TimeInstantUnits: Besselian - Replaced by Julian system, but still of occasional use
final
bakersDozen → ScalarUnits: A baker's dozen is 13. One extra donut. Thank you.
final
barns → AreaUnits: Accepted for use with the SI, subject to further review. Equals 100 square femtometers, or 1.0e-28 square meters.
final
barrels ↔ VolumeUnits: Barrels as a unit.
getter/setter pair
barrelsPetroleum ↔ VolumeUnits: Barrels petroleum as a unit.
getter/setter pair
bars ↔ PressureUnits: Shorthand bars unit.
getter/setter pair
baryes ↔ PressureUnits: Baryes as a unit.
getter/setter pair
billionEur → ScalarUnits: The European variant of one billion (10^12) as a unit.
final
billionthsUS → ScalarUnits: One billionth (US: 10^-9) as a unit.
final
billionUS → ScalarUnits: One billion (US: 10^9) as a unit.
final
bits → InformationUnits: The standard SI unit.
final
boardFeet ↔ VolumeUnits: Board feet as a unit.
getter/setter pair
boltzmannUnit → EntropyUnits: Boltzmann constant as a unit.
final
btu39 → EnergyUnits: 39 degree Fahrenheit BTUs as a unit.
final
btu60 → EnergyUnits: 60 degree Fahrenheit BTUs as a unit.
final
btuInternationalTable → EnergyUnits: International Table BTUs as a unit.
final
btuMean → EnergyUnits: Mean BTUs as a unit.
final
btuThermo → EnergyUnits: Thermochemical BTUs as a unit.
final
btuThermsPerHour ↔ PowerUnits: Square degrees as a unit.
getter/setter pair
btuThermsPerSecond ↔ PowerUnits: Thermochemical BTUs per second as a unit.
getter/setter pair
bushels ↔ VolumeUnits: Bushels as a unit.
getter/setter pair
bytes → InformationUnits: Units of 8 bits.
final
cables → LengthUnits: A non-standard unit of length.
final
calibers → LengthUnits: A non-standard unit of length.
final
calories15 → EnergyUnits: 15 degree Celsius calories as a unit.
final
calories20 → EnergyUnits: 20 degree Celsius calories as a unit.
final
caloriesInternationalTable → EnergyUnits: International Table calories as a unit.
final
caloriesKgInternationalTable → EnergyUnits: International Table kilogram calories as a unit.
final
caloriesKgMean → EnergyUnits: Mean kilogram calories as a unit.
final
caloriesKgThermo → EnergyUnits: Thermochemical kilogram calories as a unit.
final
caloriesMean → EnergyUnits: Mean calories as a unit.
final
caloriesThermo → EnergyUnits: Thermochemical calories as a unit.
final
caloriesThermoPerSecond ↔ PowerUnits: Thermochemical calories as a unit.
getter/setter pair
candelas → LuminousIntensityUnits: The standard SI unit.
final
caratsMetric → MassUnits: Metric carats as a unit.
final
centimeters → LengthUnits: A unit of one hundredth of a meter.
final
centiseconds → TimeUnits: A hundredth of a second.
final
centistokes ↔ KinematicViscosityUnits: Centistokes as a unit.
getter/setter pair
chainsEngineer → LengthUnits: A non-standard unit of length.
final
chainsSurveyor → LengthUnits: A non-standard unit of length.
final
circles → AngleUnits: Synonymous with revolutions.
final
circularMils → AreaUnits: Equal to the area of a circle with a diameter of one mil (one thousandth of an inch). It is often used for representing the area of a wire's circular cross section.
final
clausius → EntropyUnits: The erg per clausius unit of entropy.
final
cmMercury0 ↔ PressureUnits: Centimeters of mercury at 0 degrees Celsius.
getter/setter pair
cmWater4 ↔ PressureUnits: Centimeters of water at 4 degrees Celsius.
getter/setter pair
cords ↔ VolumeUnits: Cords as a unit.
getter/setter pair
cos30 → double: The cosine of a thirty degree angle.
final
cos45 → double: The cosine of a forty five degree angle.
final
coulombs → ChargeUnits: The standard SI unit.
final
cubicCentimeters ↔ VolumeUnits: Cubic centimeters as a unit.
getter/setter pair
cubicFeet ↔ VolumeUnits: Barrels as a unit.
getter/setter pair
cubicInches ↔ VolumeUnits: Cubic inches as a unit.
getter/setter pair
cubicMeters ↔ VolumeUnits: The standard SI unit.
getter/setter pair
cubicMetersPerSecond ↔ VolumeFlowRateUnits: The standard SI unit, tersely.
getter/setter pair
cubicParsecs ↔ VolumeUnits: Cubic parsecs as a unit.
getter/setter pair
cubicYards ↔ VolumeUnits: Cubic yards as a unit.
getter/setter pair
cubits → LengthUnits: A non-standard unit of length.
final
cumecs ↔ VolumeFlowRateUnits: Shorthand synonym for standard SI unit.
getter/setter pair
cups ↔ VolumeUnits: Cups as a unit.
getter/setter pair
cycles → AngleUnits: Synonymous with revolutions.
final
days → TimeUnits: Accepted for use with the SI.
final
daysMeanSolar → TimeUnits: Accepted for use with the SI.
final
daysSidereal → TimeUnits: A sidereal day is the time between two consecutive transits of the First Point of Aries. It represents the time taken by the Earth to rotate on its axis relative to the stars, and is almost four minutes shorter than the solar day because of the Earth's orbital motion.
final
decillionEur → ScalarUnits: The European variant of one decillion (10^60) as a unit.
final
decillionUS → ScalarUnits: One decillion (US: 10^33) as a unit.
final
decimeters → LengthUnits: A unit of one tenth of a meter.
final
deciseconds → TimeUnits: A tenth of a second.
final
deg → AngleUnits: Synonymous with degrees.
final
degF → TemperatureIntervalUnits: A synonym for degreesFahrenheit.
final
degK → TemperatureIntervalUnits: A synonym for degrees Kelvin.
final
degR → TemperatureIntervalUnits: A synonym for degreesRankine.
final
degrees → AngleUnits: A terse version of Angle.degrees.
final
degreesCelsius → TemperatureUnits: Degrees in the Celsius scale.
final
degreesFahrenheit → TemperatureIntervalUnits: Degrees in the Fahrenheit scale.
final
degreesPerSecond → AngularSpeedUnits: Accepted for use with the SI.
final
degreesRankine → TemperatureIntervalUnits: Degrees in the Rankine scale.
final
dekameters → LengthUnits: A unit of ten meters.
final
dekaseconds → TimeUnits: Ten seconds.
final
dozen → ScalarUnits: A dozen is 12.
final
drams ↔ VolumeUnits: Drams as a unit.
getter/setter pair
dramsApothecary → MassUnits: Apothecary drams as a unit.
final
dramsAvoirdupois → MassUnits: Avoirdupois drams as a unit.
final
duotrigintillion → ScalarUnits: One duotrigintillion (10^99) as a unit.
final
dynamicQuantityTyping ↔ bool: Dynamic quantity typing may be turned off for increased efficiency. If false, the result of operations where dimensions may change will be MiscQuantity type objects.
getter/setter pair
dynes ↔ ForceUnits: Dynes as a unit.
getter/setter pair
electronVolts → EnergyUnits: Accepted for use with the SI.
final
emuCapacitance → CapacitanceUnits: Electromagnetic unit (emu), the capacity of a circuit component to store charge.
final
emuOfInductance ↔ InductanceUnits: EMU of inductance is a synonym for nanohenries.
getter/setter pair
emuPotential ↔ ElectricPotentialDifferenceUnits: Synonymous with abvolts.
getter/setter pair
eons → TimeUnits: A synonym for aeons.
final
ergPerKelvin → EntropyUnits: The erg per kelvin unit of entropy.
final
ergs → EnergyUnits: Ergs as a unit.
final
ergsPerSecond ↔ PowerUnits: Ergs per second as a unit.
getter/setter pair
esuCapacitance → CapacitanceUnits: A synonym for statfarads.
final
esuOfInductance ↔ InductanceUnits: ESU of inductance as a unit.
getter/setter pair
esuPotential ↔ ElectricPotentialDifferenceUnits: Synonymous with statvolts.
getter/setter pair
ET → TimeInstantUnits: Ephemeris Time (ET) is the same as TDT: ET = TDT = TT = TAI + 32.184 s. Ephemeris Time was renamed Terrestrial Dynamical Time in 1984 (when Barycentric Dynamical Time was also introduced)
final
exabytes → InformationUnits: 10^18 bytes. Use Information.exbibytes (EiB) instead for the binary interpretation of EB (2^60 bytes).
final
exameters → LengthUnits: A unit of 10^18 meters.
final
exaseconds → TimeUnits: 10^18 seconds.
final
Fahrenheit → TemperatureUnits: Fahrenheit scale units.
final
faradaysC12 → ChargeUnits: Carbon 12 faradays as a unit.
final
faradaysChemical → ChargeUnits: Chemical faradays as a unit.
final
faradaysPhysical → ChargeUnits: Physical faradays as a unit.
final
farads → CapacitanceUnits: The standard SI unit.
final
faradsPerMeter ↔ PermittivityUnits: The standard SI unit.
getter/setter pair
fathoms → LengthUnits: A non-standard unit of length.
final
feet → LengthUnits: A non-standard unit of length.
final
feetPerHour ↔ SpeedUnits: Feet per hour as a unit.
getter/setter pair
feetPerMinute ↔ SpeedUnits: Feet per minute as a unit.
getter/setter pair
feetPerSecond ↔ SpeedUnits: Feet per second as a unit.
getter/setter pair
feetUsSurvey → LengthUnits: A non-standard unit of length.
final
femtometers → LengthUnits: A unit of 10^-15 meters.
final
femtoseconds → TimeUnits: 10^-15 of a second.
final
fermis → LengthUnits: A non-standard unit of length.
final
fluidOunces ↔ VolumeUnits: Fluid ounces as a unit.
getter/setter pair
fluidOuncesUK ↔ VolumeUnits: U.K. fluid ounces as a unit.
getter/setter pair
fluxUnits → SpectralIrradianceUnits: Synonymous with janskys.
final
footCandles ↔ IlluminanceUnits: Foot candles as a unit.
getter/setter pair
footPerSecondSquared → AccelerationUnits: A commonly used English unit of acceleration.
final
footPoundals → EnergyUnits: Foot-poundals as a unit.
final
footPoundsForce → EnergyUnits: Foot pounds force as a unit.
final
forceDeCheval ↔ PowerUnits: Force de cheval as a unit.
getter/setter pair
ftWater39 ↔ PressureUnits: Feet of water at 39.2 degrees Fahrenheit.
getter/setter pair
furlongs → LengthUnits: A non-standard unit of length.
final
g → MassUnits: Gram unit synonym.
final
galileos → AccelerationUnits: Defined as 0.01 meter per second squared.
final
gallonsUKLiquid ↔ VolumeUnits: U.K. liquid gallons as a unit.
getter/setter pair
gallonsUSDry ↔ VolumeUnits: U.S. dry gallons as a unit.
getter/setter pair
gallonsUSLiquid ↔ VolumeUnits: U.S. liquid gallons as a unit.
getter/setter pair
gals → AccelerationUnits: Synonymous with galileos.
final
gammas → MassUnits: Microgram units.
final
gauss ↔ MagneticFluxDensityUnits: One gauss is one ten-thousandth of a tesla.
getter/setter pair
gees → AccelerationUnits: A unit based on the acceleration experienced by a free-falling body at the Earth's surface.
final
gigabytes → InformationUnits: 10^9 bytes. Use Information.gibibytes (GiB) instead for the binary interpretation of GB (2^30 bytes).
final
gigameters → LengthUnits: A unit of one billion meters.
final
gigaseconds → TimeUnits: A billion seconds.
final
gilberts → CurrentUnits: Gilberts as a unit.
final
gillsUK ↔ VolumeUnits: U.K. gills as a unit.
getter/setter pair
gillsUS ↔ VolumeUnits: U.S. gills as a unit.
getter/setter pair
gons → AngleUnits: Synonym for grads.
final
googol ↔ Scalar: googol (10^100), arbitrary precision.
getter/setter pair
googols → ScalarUnits: One googol (10^100) as a unit.
final
GPST → TimeInstantUnits: GPS Satellite Time (GPST): GPST = TAI - 19 s
final
grades → AngleUnits: Synonym for grads.
final
grads → AngleUnits: One grad is 0.9 of a degree, exactly.
final
grains → MassUnits: Grains as a unit.
final
grams → MassUnits: A unit of one gram.
final
gramsPerCubicCentimeter ↔ MassDensityUnits: Grams per cubic centimeter as a unit.
getter/setter pair
greatGross → ScalarUnits: A great gross is 1728.
final
gross → ScalarUnits: A gross is 144.
final
halfDozen → ScalarUnits: A half-dozen is 6.
final
hands → LengthUnits: A non-standard unit of length.
final
hBarUnits → AngularMomentumUnits: The Planck constant divided by 2 PI (a.k.a., 'h-bar') as units.
final
hectares → AreaUnits: Accepted for use with the SI, subject to further review. Equals 1 square hectometer, or 10 000 square meters.
final
hectometers → LengthUnits: A unit of one hundred meters.
final
hectoseconds → TimeUnits: A hundred seconds.
final
hemispheres → SolidAngleUnits: Hemispheres as a unit.
final
henries ↔ InductanceUnits: The standard SI unit.
getter/setter pair
henriesPerMeter ↔ PermeabilityUnits: The standard SI unit.
getter/setter pair
hogsheads ↔ VolumeUnits: Hogsheads as a unit.
getter/setter pair
horsepower550 ↔ PowerUnits: Horsepower (550 ft lbs/s) as a unit.
getter/setter pair
horsepowerBoiler ↔ PowerUnits: Horsepower (boiler) as a unit.
getter/setter pair
horsepowerElectric ↔ PowerUnits: Horsepower (electric) as a unit.
getter/setter pair
horsepowerMetric ↔ PowerUnits: Horsepower (metric) as a unit.
getter/setter pair
horsepowerWater ↔ PowerUnits: Horsepower (water) as a unit.
getter/setter pair
hours → TimeUnits: Accepted for use with the SI.
final
hoursMeanSolar → TimeUnits: Accepted for use with the SI.
final
hoursSidereal → TimeUnits: A unit of one hour in the sidereal day.
final
hoursTime → AngleUnits: Based on Earth's rotation (approximately 15 degrees).
final
hundred → ScalarUnits: 100 as a unit.
final
hundredths → ScalarUnits: One hundredth as a unit.
final
hundredweightLong → MassUnits: Long hundredweight as a unit.
final
hundredweightShort → MassUnits: Short hundredweight as a unit.
final
inches → LengthUnits: A non-standard unit of length.
final
inchesPerSecond ↔ SpeedUnits: Inches per second as a unit.
getter/setter pair
inchPerSecondSquared → AccelerationUnits: A commonly used English unit of acceleration.
final
inMercury32 ↔ PressureUnits: Inches of mercury at 32 degrees Fahrenheit.
getter/setter pair
inWater39 ↔ PressureUnits: Inches of water at 39.2 degrees Fahrenheit.
getter/setter pair
J2000 → TimeInstant: J2000.0 as defined by the IAU: Julian date: 2000 Jan 1d 12h UT in the TDT time scale
final
janskys → SpectralIrradianceUnits: A non-SI unit of spectral irradiance used especially in radio astronomy.
final
JD_TAI → TimeInstantUnits: Julian Date in the TAI scale
final
JD_TCB → TimeInstantUnits: Julian Date in the TCB scale
final
JD_TCG → TimeInstantUnits: Julian Date in the TCG scale
final
JD_TDB → TimeInstantUnits: Julian Date in the TDB (TB) scale
final
JD_TDT → TimeInstantUnits: Julian Date in the TDT (TT) scale
final
JD_UT1 → TimeInstantUnits: Julian Date in the UT1 scale
final
JD_UTC → TimeInstantUnits: Julian Date in the UTC scale
final
joules → EnergyUnits: The standard SI unit.
final
jouleSecond → AngularMomentumUnits: The standard SI unit.
final
joulesPerKelvin → EntropyUnits: The standard SI unit.
final
joulesPerKilogram ↔ SpecificEnergyUnits: The standard SI unit.
getter/setter pair
kelvins → TemperatureUnits: The standard SI unit.
final
kg → MassUnits: Kilogram unit synonym.
final
kgfSecondSquaredMeter → MassUnits: Kilogram force second square meter as a unit.
final
kilobytes → InformationUnits: 1000 bytes (8000 bits). Use Information.kibibytes (kiB) instead for the binary interpretation of kB (1024 bytes).
final
kilocaloriesThermo → EnergyUnits: A synonym for thermochemical kilogram calories.
final
kilograms → MassUnits: The standard SI unit.
final
kilogramsForce ↔ ForceUnits: Kilograms force as a unit.
getter/setter pair
kilogramsPerCubicMeter ↔ MassDensityUnits: The standard SI unit.
getter/setter pair
kilojoules → EnergyUnits: Kilojoules as a unit.
final
kilometers → LengthUnits: A unit of one thousand meters.
final
kilometersPerHour ↔ SpeedUnits: Kilometers per hour as a unit.
getter/setter pair
kilomoles → AmountOfSubstanceUnits: A unit of one thousand moles.
final
kiloponds ↔ ForceUnits: A synonym for kilograms force.
getter/setter pair
kiloseconds → TimeUnits: A thousand seconds.
final
kilowattHours → EnergyUnits: Kilowatt-hours as a unit.
final
kilowatts ↔ PowerUnits: Shorthand kilowatts as a unit.
getter/setter pair
kips ↔ ForceUnits: Kips as a unit.
getter/setter pair
knots ↔ SpeedUnits: Knots, tersely.
getter/setter pair
langleys → EnergyFluxUnits: Langleys as a unit.
final
leaguesNautical → LengthUnits: A non-standard unit of length.
final
leaguesStatute → LengthUnits: A non-standard unit of length.
final
leaguesUkNautical → LengthUnits: A non-standard unit of length.
final
lightYears → LengthUnits: The distance light travels in one year.
final
linksEngineer → LengthUnits: A non-standard unit of length.
final
linksSurveyor → LengthUnits: A non-standard unit of length.
final
liters ↔ VolumeUnits: A terse alternative to Volume.liters.
getter/setter pair
litersPerSecond ↔ VolumeFlowRateUnits: 0.001 cubic meter per second.
getter/setter pair
logger ↔ Logger: Logger for use across entire library
getter/setter pair
lusecs ↔ VolumeFlowRateUnits: Shorthand synonym for liters per second.
getter/setter pair
lux ↔ IlluminanceUnits: The standard SI unit.
getter/setter pair
magFieldAtomicUnit ↔ MagneticFluxDensityUnits: Magnetic field atomic unit.
getter/setter pair
magneticGammas ↔ MagneticFluxDensityUnits: A synonym for nanoteslas.
getter/setter pair
maxwells ↔ MagneticFluxUnits: A maxwell is one one-hundred-millionth of a weber.
getter/setter pair
megabytes → InformationUnits: 10^6 bytes. Use Information.mebibytes (MiB) instead for the binary interpretation of MB (2^20 bytes).
final
megameters → LengthUnits: A unit of one million meters.
final
megaseconds → TimeUnits: A million seconds.
final
meterPerSecondSquared → AccelerationUnits: A synonym for the standard SI-MKS unit of acceleration.
final
meters → LengthUnits: The standard SI unit.
final
metersPerSecond ↔ SpeedUnits: The standard SI unit.
getter/setter pair
metersSquaredPerSecond ↔ KinematicViscosityUnits: The standard SI unit.
getter/setter pair
metricTons → MassUnits: Accepted for use with the SI.
final
mg → MassUnits: Milligram unit synonym.
final
mho → ConductanceUnits: Synonymous with Siemens.
final
micrometers → LengthUnits: A unit of one millionth of a meter.
final
microns → LengthUnits: A synonym for micrometers.
final
microseconds → TimeUnits: A millionth of a second.
final
miles → LengthUnits: A non-standard unit of length.
final
milesPerHour ↔ SpeedUnits: Miles per hour as a unit.
getter/setter pair
milesPerMinute ↔ SpeedUnits: Miles per minute as a unit.
getter/setter pair
milesPerSecond ↔ SpeedUnits: Miles per second as a unit.
getter/setter pair
millibars ↔ PressureUnits: A millibar as a unit.
getter/setter pair
milligrams → MassUnits: A unit of one thousandth of a gram.
final
millimeters → LengthUnits: A unit of one thousandth of a meter.
final
million → ScalarUnits: One million as a unit.
final
millionths → ScalarUnits: One millionth as a unit.
final
milliradian → AngleUnits: A unit of one thousandth of a radian.
final
milliseconds → TimeUnits: A thousandth of a second.
final
millisteradians → SolidAngleUnits: Millisteradians as a unit.
final
mils → LengthUnits: A non-standard unit of length.
final
minersInches ↔ VolumeFlowRateUnits: The miner's inch as a unit.
getter/setter pair
minutes → TimeUnits: Accepted for use with the SI.
final
minutesArc → AngleUnits: A terse version of Angle.minutesArc.
final
minutesMeanSolar → TimeUnits: Accepted for use with the SI.
final
minutesSidereal → TimeUnits: A unit of one minute in the sidereal day.
final
minutesTime → AngleUnits: Based on Earth's rotation.
final
MJD_TAI → TimeInstantUnits: Modified Julian Date in the TAI scale
final
MJD_TCB → TimeInstantUnits: Modified Julian Date in the TCB scale
final
MJD_TCG → TimeInstantUnits: Modified Julian Date in the TCG scale
final
MJD_TDB → TimeInstantUnits: Modified Julian Date in the TDB scale
final
MJD_TDT → TimeInstantUnits: Modified Julian Date in the TDT scale
final
MJD_UT1 → TimeInstantUnits: Modified Julian Date in the UT1 scale
final
MJD_UTC → TimeInstantUnits: Modified Julian Date in the UTC scale
final
moles → AmountOfSubstanceUnits: A synonym for the SI-MKS base unit of amount of substance.
final
musecs ↔ VolumeFlowRateUnits: Shorthand synonym for standard SI unit.
getter/setter pair
myriad → ScalarUnits: A myriad is ten thousand.
final
nanometers → LengthUnits: A unit of one billionth of a meter.
final
nanoseconds → TimeUnits: A billionth of a second.
final
nauticalMilesUk → LengthUnits: A non-standard unit of length.
final
newtons → ForceUnits: The standard SI unit.
final
newtonsPerAmpereSquared ↔ PermeabilityUnits: Newtons per ampere as a unit.
getter/setter pair
newtonsPerSquareMeter ↔ PressureUnits: A synonym for pascals.
getter/setter pair
nonillionEur → ScalarUnits: The European variant of one nonillion (10^54) as a unit.
final
nonillionUS → ScalarUnits: One nonillion (US: 10^30) as a unit.
final
NTP → TimeInstantUnits: Network Time Protocol (NTP) - NTP is offset from the UTC time scale, with its epoch at 1 Jan 1900 0h
final
octants → SolidAngleUnits: One eighth (1/8) of a sphere (a spherical right triangle).
final
octillionEur → ScalarUnits: The European variant of one octillion (10^48) as a unit.
final
octillionUS → ScalarUnits: One octillion (US: 10^27) as a unit.
final
ohms ↔ ResistanceUnits: The standard SI unit.
getter/setter pair
one → ScalarUnits: The standard SI unit.
final
ouncesApothecary → MassUnits: Apothecary ounces as a unit.
final
ouncesAvoirdupois → MassUnits: Avoirdupois ounces as a unit.
final
ouncesForceAvoirdupois ↔ ForceUnits: Avoirdupois ounces force as a unit.
getter/setter pair
paces → LengthUnits: A non-standard unit of length.
final
pair → ScalarUnits: A pair is 2.
final
parsecs → LengthUnits: A non-standard unit of length.
final
pascals ↔ PressureUnits: The standard SI unit.
getter/setter pair
pecks ↔ VolumeUnits: Pecks as a unit.
getter/setter pair
pennyweightTroy → MassUnits: Troy pennyweight as a unit.
final
percent → ScalarUnits: Synonymous with Scalar.percent.
final
perches → LengthUnits: A non-standard unit of length.
final
petabytes → InformationUnits: 10^15 bytes. Use Information.pebibytes (PiB) instead for the binary interpretation of PB (2^50 bytes).
final
petameters → LengthUnits: A unit of 10^15 meters.
final
petaseconds → TimeUnits: 10^15 seconds.
final
phots ↔ IlluminanceUnits: Phots as a unit.
getter/setter pair
picas → LengthUnits: A non-standard unit of length.
final
picometers → LengthUnits: A unit of 10^-12 meters.
final
picoseconds → TimeUnits: 10^-12 of a second.
final
pintsDry ↔ VolumeUnits: U.S. dry pints as a unit.
getter/setter pair
pintsLiquid ↔ VolumeUnits: U.S. liquid pints as a unit.
getter/setter pair
planckUnits → AngularMomentumUnits: The Planck constant as units.
final
points → LengthUnits: A non-standard unit of length.
final
poles → LengthUnits: A non-standard unit of length.
final
poundals ↔ ForceUnits: Poundals as a unit.
getter/setter pair
poundsApothecary → MassUnits: Apothecary pounds as a unit.
final
poundsAvoirdupois → MassUnits: Avoirdupois pounds as a unit.
final
poundsForceAvoirdupois ↔ ForceUnits: Avoirdupois pounds force as a unit.
getter/setter pair
poundsPerCubicFoot ↔ MassDensityUnits: Pounds per cubic foot as a unit.
getter/setter pair
poundsPerCubicInch ↔ MassDensityUnits: Pounds per cubic inch as a unit.
getter/setter pair
psi ↔ PressureUnits: Pounds per square inch as a unit.
getter/setter pair
quadrants → AngleUnits: Represents a quarter circle of ninety degrees.
final
quadrillionEur → ScalarUnits: The European variant of one quadrillion (10^24) as a unit.
final
quadrillionUS → ScalarUnits: One quadrillion (US: 10^15) as a unit.
final
quartsDry ↔ VolumeUnits: U.S. dry quarts as a unit.
getter/setter pair
quartsLiquid ↔ VolumeUnits: U.S. liquid quarts as a unit.
getter/setter pair
quintals → MassUnits: A quintal is 100 kilograms.
final
quintillionEur → ScalarUnits: The European variant of one quintillion (10^30) as a unit.
final
quintillionUS → ScalarUnits: One quintillion (US: 10^18) as a unit.
final
rad → AngleUnits: Synonymous with radians.
final
radians → AngleUnits: A terse version of Angle.radians.
final
radiansPerSecond → AngularSpeedUnits: The standard SI unit.
final
Rankine → TemperatureUnits: Rankine scale units.
final
referenceSound ↔ PowerUnits: A power commonly used as the reference power for calculation of sound power levels.
getter/setter pair
referenceSoundAir ↔ PressureUnits: A pressure often used as the reference pressure for calculation of sound pressure levels.
getter/setter pair
referenceSoundWater ↔ PressureUnits: A pressure commonly used as the reference pressure for calculation of sound pressure levels.
getter/setter pair
registryTons ↔ VolumeUnits: Registry tons as a unit.
getter/setter pair
revolutions → AngleUnits: Represents a full circle of two pi radians.
final
revolutionsPerMinute → AngularSpeedUnits: Rotation frequency.
final
rods → LengthUnits: A non-standard unit of length.
final
rpm → AngularSpeedUnits: A synonym for revolutionsPerMinute.
final
score → ScalarUnits: A score is 20. Four score is 80. More poetic than just saying eighty.
final
scruples → MassUnits: Scruples as a unit.
final
seconds → TimeUnits: The standard SI unit.
final
secondsArc → AngleUnits: A terse version of Angle.secondsArc.
final
secondsSidereal → TimeUnits: A unit of one second in the sidereal day.
final
secondsTime → AngleUnits: Based on Earth's rotation.
final
sections → AreaUnits: Synonymous with squareMiles.
final
semicircles → AngleUnits: Represents a half circle of one hundred eighty degrees (pi radians).
final
septillionEur → ScalarUnits: The European variant of one billion (10^42) as a unit.
final
septillionUS → ScalarUnits: One septillion (US: 10^24) as a unit.
final
sextillionEur → ScalarUnits: The European variant of one sextillion (10^36) as a unit.
final
sextillionUS → ScalarUnits: One sextillion (US: 10^21) as a unit.
final
signs → AngleUnits: A sign unit is a little more than half a radian.
final
sin45 → double: The sine of a forty five degree angle.
final
sin60 → double: The sine of a sixty degree angle.
final
skeins → LengthUnits: A non-standard unit of length.
final
slugs → MassUnits: Slugs as a unit.
final
slugsPerCubicFoot ↔ MassDensityUnits: Slugs per cubic foot as a unit.
getter/setter pair
spans → LengthUnits: A non-standard unit of length.
final
spats → SolidAngleUnits: Spats as a unit.
final
speedOfLightSquared ↔ SpecificEnergyUnits: The square of the speed of light in a vacuum.
getter/setter pair
speedOfLightUnits ↔ SpeedUnits: The speed of light as a unit.
getter/setter pair
spheres → SolidAngleUnits: Spheres as a unit.
final
sphericalRightTriangles → SolidAngleUnits: Same as octants.
final
squareArcMinutes → SolidAngleUnits: Square arc minutes as a unit.
final
squareArcSeconds → SolidAngleUnits: Square arc seconds as a unit.
final
squareCentimeters → AreaUnits: An area unit equivalent to a square with sides having a length of one centimeter.
final
squareDegrees → SolidAngleUnits: Square degrees as a unit.
final
squareFeet → AreaUnits: An area unit equivalent to a square with sides having a length of one foot.
final
squareFeetPerSecond ↔ KinematicViscosityUnits: Square feet per second as a unit.
getter/setter pair
squareInches → AreaUnits: An area unit equivalent to a square with sides having a length of one inch.
final
squareKilometers → AreaUnits: An area unit equivalent to a square with sides having a length of one kilometer.
final
squareMeters → AreaUnits: The standard SI unit.
final
squareMetersPerSquareSecond ↔ SpecificEnergyUnits: Square meters per second as a unit.
getter/setter pair
squareMiles → AreaUnits: An area unit equivalent to a square with sides having a length of one mile.
final
squarePerches → AreaUnits: Synonymous with squareRods.
final
squarePoles → AreaUnits: Synonymous with squareRods.
final
squareRods → AreaUnits: An area unit equivalent to a square with sides having a length of one rod.
final
squareYards → AreaUnits: An area unit equivalent to a square with sides having a length of one yard.
final
standardAccelerationOfGravity → AccelerationUnits: The more formal name for gees.
final
statamperes → CurrentUnits: Statamperes as a unit.
final
statcoulombs → ChargeUnits: Statcoulombs as a unit.
final
statfarads → CapacitanceUnits: The statfarad is the standard unit of capacitance in the cgs (centimeter/gram/second) system.
final
statmhos → ConductanceUnits: A non-SI unit of electrical conductance.
final
statvolts ↔ ElectricPotentialDifferenceUnits: A useful unit for electromagnetism because, in a vacuum, an electric field of one statvolt/cm has the same energy density as a magnetic field of one gauss. Likewise, a plane wave propagating in a vacuum has perpendicular electric and magnetic fields such that for every gauss of magnetic field intensity there is one statvolt/cm of electric field intensity.
getter/setter pair
steradians → SolidAngleUnits: The standard SI unit.
final
steres ↔ VolumeUnits: A synonym for cubic meters.
getter/setter pair
stokes ↔ KinematicViscosityUnits: Stokes as a unit.
getter/setter pair
system → TimeInstantUnits: Measures time since 1 Jan 1970 0h 0m 0s, which is the System time defined by many computer operating systems
final
tablespoons ↔ VolumeUnits: Tablespoons as a unit.
getter/setter pair
TAI → TimeInstantUnits: International Atomic Time scale units
final
tan30 → double: The tangent of a thirty degree angle.
final
tan60 → double: The tangent of a sixty degree angle.
final
TB → TimeInstantUnits: Barycentric Time (TB); same as TDB: TT = TDB
final
TCB → TimeInstantUnits: Barycentric Coordinate Time (TCB): TCB = TDB + (1.550505e-8)(JD - 2443144.5)(86400)
final
TCG → TimeInstantUnits: Geocentric Coordinate Time (TCG): TCG = TDT + (6.969291e-10)(JD - 2443144.5)(86400)
final
TDB → TimeInstantUnits: Barycentric Dynamical Time (TDB): TDB varies from TDT by periodic variations
final
TDT → TimeInstantUnits: Terrestrial Dynamical Time (TDT): TDT = TAI + 32.184 s
final
teaspoons ↔ VolumeUnits: Teaspoons as a unit.
getter/setter pair
tenths → ScalarUnits: One tenth as a unit.
final
terabytes → InformationUnits: 10^12 bytes. Use Information.tebibytes (TiB) instead for the binary interpretation of TB (2^40 bytes).
final
terameters → LengthUnits: A unit of 10^12 meters.
final
teraseconds → TimeUnits: 10^12 seconds.
final
teslas ↔ MagneticFluxDensityUnits: The standard SI unit.
getter/setter pair
thermalCoulomb → EntropyUnits: Entropy as a 'charge'; identical to joulesPerKelvin.
final
therms → EnergyUnits: Therms as a unit.
final
thousand → ScalarUnits: 1000 as a unit.
final
thousandths → ScalarUnits: One thousandth as a unit.
final
tonnes → MassUnits: Accepted for use with the SI.
final
tons → EnergyUnits: Tons of TNT equivalent as a unit.
final
tonsAssay → MassUnits: Assay tons as a unit.
final
tonsLong → MassUnits: Long tons as a unit.
final
tonsShort → MassUnits: Short tons as a unit.
final
torrs ↔ PressureUnits: Torrs as a unit.
getter/setter pair
townships → AreaUnits: An area unit used in US surveyors' measures equalling 36 square miles.
final
trillionEur → ScalarUnits: The European variant of one trillion (10^18) as a unit.
final
trillionthsUS → ScalarUnits: One trillionth (US: 10^-12) as a unit.
final
trillionUS → ScalarUnits: One trillion (US: 10^12) as a unit.
final
TT → TimeInstantUnits: Terrestrial Time (TT) is the same as TDT: TDT = TT = TAI + 32.184 s
final
unifiedAtomicMassUnits → MassUnits: Accepted for use with the SI.
final
unitPoles ↔ MagneticFluxUnits: Unit poles as a unit.
getter/setter pair
unitPolesDensity ↔ MagneticFluxDensityUnits: Unit poles density as a unit.
getter/setter pair
UT1 → TimeInstantUnits: Universal Time (UT1): UT1 = TDT - Delta T
final
UT2 → TimeInstantUnits: Universal Time (UT2): UT2 = UT1 + 0.022 sin(2PIt) - 0.012 cos(2PIt) - 0.006 sin(4PIt) + 0.007 cos(4PIt), where t = the date in Besellian years
final
UTC → TimeInstantUnits: Coordinated Universal Time (differs from TAI by a number of leap seconds)
final
volts ↔ ElectricPotentialDifferenceUnits: The standard SI unit.
getter/setter pair
wattHour → EnergyUnits: Watt-hour as a unit.
final
watts ↔ PowerUnits: The standard SI unit.
getter/setter pair
wattSecond → EnergyUnits: Watt-second as a unit.
final
wattsPerSquareMeter → EnergyFluxUnits: The standard SI unit.
final
webers ↔ MagneticFluxUnits: The standard SI unit.
getter/setter pair
xUnits → LengthUnits: A non-standard unit of length.
final
yards → LengthUnits: A non-standard unit of length.
final
yearsCalendar → TimeUnits: Calendar years as a unit.
final
yearsJulian → TimeUnits: Defined as exactly 365.25 days of 86400 SI seconds each. The length of the Julian year is the average length of the year in the Julian calendar that was used in Western societies until some centuries ago, and from which the unit is named.
final
yearsSidereal → TimeUnits: Sidereal years as a unit.
final
yearsTropical → TimeUnits: Tropical years as a unit.
final
yoctometers → LengthUnits: A unit of 10^-24 meters.
final
yoctoseconds → TimeUnits: 10^-24 of a second.
final
yottameters → LengthUnits: A unit of 10^24 meters.
final
yottaseconds → TimeUnits: 10^24 seconds.
final
zeptometers → LengthUnits: A unit of 10^-21 meters.
final
zeptoseconds → TimeUnits: 10^-21 of a second.
final
zettameters → LengthUnits: A unit of 10^21 meters.
final
zettaseconds → TimeUnits: 10^21 seconds.
final

Functions

angleFromHourMinSec(int hour, int minute, double second, [double uncert = 0]) → Angle: Constructs an angle from hours, minutes and seconds of time (as opposed to arc).
areWithin(Quantity q1, Quantity q2, Quantity tolerance) → bool: Returns whether or not the magnitude of the difference between two quantities is less than or equal to the specified tolerance.
condenseUnicodeSequences(String? input) → String?
cosecant(Angle a) → double: The ratio of the hypotenuse to the side opposite an acute angle; the reciprocal of sine.
cosine(Angle a) → double: Calculates the cosine of an Angle (adjacent divided by hypotenuse).
cotangent(Angle a) → double: The ratio of the side (other than the hypotenuse) adjacent to a particular acute angle to the side opposite the angle.
createTypedQuantityInstance(Type t, dynamic value, Units? units, {double uncert = 0.0, Dimensions? dimensions}) → Quantity: Creates an instance of a typed quantity of type t having the specified value in units.
degToRad(num deg) → double: Converts degrees to radians.
erf(double x) → double: Approximate solution for the error function of x.
getDeltaT(TimeInstant time) → double: Returns the value 'Delta T,' in seconds, which relates the Terrestrial Dynamical Time scale to measured Universal Time (and indirectly UTC to TAI before 1972, when leap seconds were introduced).
getLeapSeconds(double tai, {bool pre1972LeapSeconds = false}) → num: Returns the number of leap seconds in effect for the specified time instant, tai, specified in the TAI time scale. The number of leap seconds relates the UTC time scale to the TAI time scale.
hashObjects(Iterable<Object> objects) → int: Generates a unique hash for a set of objects.
numberToNum(Number number) → num: Converts a Number to the equivalent num.
numToNumber(num value) → Number: Converts a num value to associated Number object (Integer for ints and doubles that have an integer value, Double for other doubles).
objToNumber(Object object) → Number: Converts an object to a Number. The object must be either a num or Number, otherwise an Exception is thrown.
radToDeg(num rad) → double: Convert radians to degrees.
secant(Angle a) → double: The ratio of the hypotenuse to the shorter side adjacent to an acute angle; the reciprocal of a cosine.
secondsInUtcDay(double utc) → double: Calculates and returns the number of seconds (including any leap seconds) that are in the UTC day containing the specified second, utc.
siBaseQuantity(Quantity q) → bool: Returns whether or not q is one of the seven SI base quantities.
siDerivedQuantity(Quantity q) → bool: Returns whether or not q is a derived quantity (as opposed to one of the seven base SI quantities).
sine(Angle a) → double: Calculates the sine of an Angle (opposite divided by hypotenuse).
tangent(Angle a) → double: Calculates the tangent of an Angle (opposite divided by adjacent).
toMutable(Quantity q) → MutableQuantity: Create a MutableQuantity with the same value, dimensions and uncertainty as q.
uncertaintyRangeForQuantity(Quantity q, {double k = 1.0}) → QuantityRange<Quantity>: Creates a QuantityRange that represents the standard uncertainty of q.
unicodeExponent(num exp) → String: Returns the unicode symbols that represent an exponent.
yr4(int year) → int: Returns a four digit year from year which may be only 2 digits, assuming that anything 70 or more means 19xx and under 70 means 20xx.

Typedefs

FromMksOverride = Number Function(dynamic mks)
ToMksOverride = Number Function(dynamic val)

Exceptions / Errors

DimensionsException: This Exception is thrown when an attempt is made to perform an operation on a Quantity having unexpected or illegal dimensions.
ImmutableQuantityException: This Exception is thrown when an attempt is made to modify an immutable Quantity object (for example through its setMKS method).
NumberException: The base class for all exceptions thrown in relation to numbers.
QuantityException: The base class for all exceptions thrown in relation to quantities.