domain/universal library
Quantity types and constants with universal application.
Classes
- 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.
- Length
- Represents the length physical quantity (one of the seven base SI quantities). See the Wikipedia entry for Length for more information.
- 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.
- 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.
- 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.
- Permittivity
- The resistance that is encountered when forming an electric field in a medium. See the Wikipedia entry for Permittivity for more information.
- 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.
- Speed
- The rate of change of position. See the Wikipedia entry for Speed for more information.
- Temperature
- An objective comparative measure of hot or cold. See the Wikipedia entry for Thermodynamic temperature for more information.
- Time
- Represents the time interval physical quantity (one of the seven base SI quantities).
- WaveNumber
- The spatial frequency of a wave. See the Wikipedia entry for Wavenumber for more information.
Constants
- c → const Speed
- The symbol for the speed of light constant.
- c0 → const Speed
- An alternative symbol for the speed of light constant.
- characteristicImpedanceOfVacuum → const Resistance
- Relates the magnitudes of the electric and magnetic fields of electromagnetic radiation travelling through free space.
- G → const MiscQuantity
- The symbol for the Newtonian constant of gravitation.
- h → const AngularMomentum
- The symbol for the Planck constant.
- hBar → const AngularMomentum
- The Planck constant divided by 2 PI (a.k.a., 'h-bar' or 'reduced Planck constant').
- newtonianConstantOfGravitation → const MiscQuantity
- An empirical physical constant involved in the calculation of gravitational effects.
- 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.
- rydberg → const WaveNumber
- Appears in the Balmer formula for spectral lines of the hydrogen atom. For a hydrogen atom, the effective mass must be taken as the reduced mass of the proton and electron. In MKS, this gives the Rydberg constant.
- speedOfLightVacuum → const Speed
- Speed of light in a vacuum.
- 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.
Properties
- eps0 ↔ Permittivity
-
The symbol for the electric constant.
getter/setter pair
- mu0 ↔ Permeability
-
The symbol for the magnetic constant.
getter/setter pair
- Z0 ↔ Resistance
-
The symbol for the characteristic impedance of vacuum.
getter/setter pair