Constants Class |
A collection of frequently used mathematical constants.
Inheritance HierarchyNamespace: Altaxo.Calc
Assembly: AltaxoCore (in AltaxoCore.dll) Version: 4.8.3261.0 (4.8.3261.0)
SyntaxC#
public static class Constants
The Constants type exposes the following members.
Fields| Name | Description | |
|---|---|---|
  | Atto | The SI prefix factor corresponding to 0.000 000 000 000 000 001 |
| Avogadro | Avogadro constant: [mol^-1] (2010 CODATA) |
| BohrMagneton | Bohr Magneton: mu_B = e*h_bar/2*m_e [J T^-1] (2007 CODATA) |
| BohrRadius | Bor Radius: a_0 = alpha/4*Pi*R_infty [m] (2007 CODATA) |
| Catalan | The Catalan constant |
| Centi | The SI prefix factor corresponding to 0.01 |
| CharacteristicImpedanceVacuum | Characteristic Impedance of Vacuum: Z_0 = mu_0*c_0 [Ohm = m^2 kg s^-3 A^-2] (defined, exact; 2007 CODATA) |
| ClassicalElectronRadius | Classical Electron Radius: [m] (2007 CODATA) |
| ComptonWavelength | Electron Compton Wavelength: [m] (2007 CODATA) |
| ConductanceQuantum | Conductance Quantum: G_0 = 2*e^2/h [S = m^-2 kg^-1 s^3 A^2] (2007 CODATA) |
| Deca | The SI prefix factor corresponding to 10 |
| Deci | The SI prefix factor corresponding to 0.1 |
| Degree | The number (pi)/180 - factor to convert from Degree (deg) to Radians (rad). |
| DeuteronMagneticMoment | Deuteron Magnetic Moment: [J T^-1] (2007 CODATA) |
| DeuteronMass | Deuteron Mass: [kg] (2007 CODATA) |
| DeuteronMassEnegryEquivalent | Deuteron Mass Energy Equivalent: [J] (2007 CODATA) |
| DeuteronMolarMass | Deuteron Molar Mass: [kg mol^-1] (2007 CODATA) |
| DiracsConstant | Reduced Planck's constant: h_bar = h / (2*Pi) [J s = m^2 kg s^-1] (2007 CODATA) |
| E | The number e |
| ElectricPermittivity | Electric Permittivity in Vacuum: epsilon_0 = 1/(mu_0*c_0^2) [F m^-1 = A^2 s^4 kg^-1 m^-3] (defined, exact; 2007 CODATA) |
| ElectronGFactor | Electon G-Factor: [1] (2007 CODATA) |
| ElectronMagneticMoment | Electron Magnetic Moment: [J T^-1] (2007 CODATA) |
| ElectronMass | Electron Mass: [kg] (2007 CODATA) |
| ElectronMassEnergyEquivalent | Electron Mass Energy Equivalent: [J] (2007 CODATA) |
| ElectronMolarMass | Electron Molar Mass: [kg mol^-1] (2007 CODATA) |
| ElementaryCharge | Elementary Electron Charge: e = 1.602176487e-19 [C = A s] (2007 CODATA) |
| EulerMascheroni | The Euler-Mascheroni constant |
| Exa | The SI prefix factor corresponding to 1 000 000 000 000 000 000 |
| Femto | The SI prefix factor corresponding to 0.000 000 000 000 001 |
| FermiCouplingConstant | Fermi Coupling Constant: G_F/(h_bar*c_0)^3 [GeV^-2] (2007 CODATA) |
| FineStructureConstant | Fine Structure Constant: alpha = e^2/4*Pi*e_0*h_bar*c_0 [1] (2007 CODATA) |
| Giga | The SI prefix factor corresponding to 1 000 000 000 |
| Glaisher | The Glaisher constant |
| GoldenRatio | The number (1+sqrt(5))/2, also known as the golden ratio |
| Grad | The number (pi)/200 - factor to convert from NewGrad (grad) to Radians (rad). |
| GravitationalConstant | Newtonian Constant of Gravitation: G = 6.67429e-11 [m^3 kg^-1 s^-2] (2007 CODATA) |
| HalfSqrt3 | The number sqrt(3)/2 |
| HartreeEnergy | Hartree Energy: E_h = 2*R_infty*h*c_0 [J] (2007 CODATA) |
| Hecto | The SI prefix factor corresponding to 100 |
| HelionMass | Helion Mass: [kg] (2007 CODATA) |
| HelionMassEnegryEquivalent | Helion Mass Energy Equivalent: [J] (2007 CODATA) |
| HelionMolarMass | Helion Molar Mass: [kg mol^-1] (2007 CODATA) |
| InvE | The number 1/e |
| InvPi | The number 1/pi |
| InvSqrt2Pi | The number 1/sqrt(2pi) |
| InvSqrtPi | The number 1/sqrt(pi) |
| JosephsonConstant | Josephson Constant: K_J = 2*e/h [Hz V^-1] (2007 CODATA) |
| Khinchin | The Khinchin constant |
| Kilo | The SI prefix factor corresponding to 1 000 |
| Ln10 | The number log[e](10) |
| Ln2 | The number log[e](2) |
| Ln2PiOver2 | The number log[e](2*pi)/2 |
| LnPi | The number log[e](pi) |
| Log10E | The number log[10](e) |
| Log2E | The number log[2](e) |
| LogSqrt2Pi | The number log(sqrt(2*pi)) |
| LogSqrt2PiE | The number log(sqrt(2*pi*e)) |
| LogTwoSqrtEOverPi | The number log(2 * sqrt(e / pi)) |
| MagneticFluxQuantum | Magnetic Flux Quantum: theta_0 = h/(2*e) [Wb = m^2 kg s^-2 A^-1] (2007 CODATA) |
| MagneticPermeability | Magnetic Permeability in Vacuum: mu_0 = 4*Pi * 10^-7 [N A^-2 = kg m A^-2 s^-2] (defined, exact; 2007 CODATA) |
| Mega | The SI prefix factor corresponding to 1 000 000 |
| Micro | The SI prefix factor corresponding to 0.000 001 |
| Milli | The SI prefix factor corresponding to 0.001 |
| MuonComptonWavelength | Muon Compton Wavelength: [m] (2007 CODATA) |
| MuonGFactor | Muon G-Factor: [1] (2007 CODATA) |
| MuonMagneticMoment | Muon Magnetic Moment: [J T^-1] (2007 CODATA) |
| MuonMass | Muon Mass: [kg] (2007 CODATA) |
| MuonMassEnegryEquivalent | Muon Mass Energy Equivalent: [J] (2007 CODATA) |
| MuonMolarMass | Muon Molar Mass: [kg mol^-1] (2007 CODATA) |
| Nano | The SI prefix factor corresponding to 0.000 000 001 |
| NeutralDecibel | The number ln(10)/10 - factor to convert from Neutral Decibel (dB) to Neper (Np). Use this version when either both or neither of the Decibel and the compared values represent powers. |
| NeutronComptonWavelength | Neuron Compton Wavelength: [m] (2007 CODATA) |
| NeutronGFactor | Neutron G-Factor: [1] (2007 CODATA) |
| NeutronGyromagneticRatio | Neutron Gyro-Magnetic Ratio: [s^-1 T^-1] (2007 CODATA) |
| NeutronMagneticMoment | Neutron Magnetic Moment: [J T^-1] (2007 CODATA) |
| NeutronMass | Neutron Mass: [kg] (2007 CODATA) |
| NeutronMassEnegryEquivalent | Neutron Mass Energy Equivalent: [J] (2007 CODATA) |
| NeutronMolarMass | Neutron Molar Mass: [kg mol^-1] (2007 CODATA) |
| NuclearMagneton | Nuclear Magneton: mu_N = e*h_bar/2*m_p [J T^-1] (2007 CODATA) |
| Peta | The SI prefix factor corresponding to 1 000 000 000 000 000 |
| Pi | The number pi |
| Pi2 | The number pi*2 |
| Pi3Over2 | The number pi*3/2 |
| Pico | The SI prefix factor corresponding to 0.000 000 000 001 |
| PiOver2 | The number pi/2 |
| PiOver4 | The number pi/4 |
| PlancksConstant | Planck's constant: h = 6.62606896e-34 [J s = m^2 kg s^-1] (2007 CODATA) |
| PlancksLength | Planck length: l_p = h_bar/(m_p*c_0) [m] (2007 CODATA) |
| PlancksMass | Planck mass: m_p = (h_bar*c_0/G)^(1/2) [kg] (2007 CODATA) |
| PlancksTemperature | Planck temperature: T_p = (h_bar*c_0^5/G)^(1/2)/k [K] (2007 CODATA) |
| PlancksTime | Planck time: t_p = l_p/c_0 [s] (2007 CODATA) |
| PowerDecibel | The number ln(10)/20 - factor to convert from Power Decibel (dB) to Neper (Np). Use this version when the Decibel represent a power gain but the compared values are not powers (e.g. amplitude, current, voltage). |
| ProtonComptonWavelength | Proton Compton Wavelength: [m] (2007 CODATA) |
| ProtonGFactor | Proton G-Factor: [1] (2007 CODATA) |
| ProtonGyromagneticRatio | Proton Gyro-Magnetic Ratio: [s^-1 T^-1] (2007 CODATA) |
| ProtonMagneticMoment | Proton Magnetic Moment: [J T^-1] (2007 CODATA) |
| ProtonMass | Proton Mass: [kg] (2007 CODATA) |
| ProtonMassEnergyEquivalent | Proton Mass Energy Equivalent: [J] (2007 CODATA) |
| ProtonMolarMass | Proton Molar Mass: [kg mol^-1] (2007 CODATA) |
| QuantumOfCirculation | Quantum of Circulation: h/2*m_e [m^2 s^-1] (2007 CODATA) |
| RydbergConstant | Rydberg Constant: R_infty = alpha^2*m_e*c_0/2*h [m^-1] (2007 CODATA) |
| ShieldedProtonGyromagneticRatio | Proton Shielded Gyro-Magnetic Ratio: [s^-1 T^-1] (2007 CODATA) |
| ShieldedProtonMagneticMoment | Proton Shielded Magnetic Moment: [J T^-1] (2007 CODATA) |
| SizeOfComplex | The size of a Complex in bytes. |
| SizeOfComplex32 | The size of a Complex in bytes. |
| SizeOfDouble | The size of a double in bytes. |
| SizeOfFloat | The size of a float in bytes. |
| SizeOfInt | The size of an int in bytes. |
| SpeedOfLight | Speed of Light in Vacuum: c_0 = 2.99792458e8 [m s^-1] (defined, exact; 2007 CODATA) |
| Sqrt1Over2 | The number sqrt(1/2) = 1/sqrt(2) = sqrt(2)/2 |
| Sqrt2 | The number sqrt(2) |
| Sqrt2Pi | The number sqrt(2pi) |
| Sqrt2PiE | The number sqrt(2*pi*e) |
| Sqrt3 | The number sqrt(3) |
| SqrtE | The number sqrt(e) |
| SqrtPi | The number sqrt(pi) |
| SqrtPiOver2 | The number sqrt(pi/2) |
| TauComptonWavelength | Tau Compton Wavelength: [m] (2007 CODATA) |
| TauMass | Tau Mass: [kg] (2007 CODATA) |
| TauMassEnergyEquivalent | Tau Mass Energy Equivalent: [J] (2007 CODATA) |
| TauMolarMass | Tau Molar Mass: [kg mol^-1] (2007 CODATA) |
| Tera | The SI prefix factor corresponding to 1 000 000 000 000 |
| ThomsonCrossSection | Thomson Cross Section: [m^2] (2002 CODATA) |
| TwoInvPi | The number 2/pi |
| TwoInvSqrtPi | The number 2/sqrt(pi) |
| TwoSqrtEOverPi | The number 2 * sqrt(e / pi) |
| VonKlitzingConstant | Von Klitzing Constant: R_K = h/e^2 [Ohm = m^2 kg s^-3 A^-2] (2007 CODATA) |
| WeakMixingAngle | Weak Mixin Angle: sin^2(theta_W) [1] (2007 CODATA) |
| Yocto | The SI prefix factor corresponding to 0.000 000 000 000 000 000 000 001 |
| Yotta | The SI prefix factor corresponding to 1 000 000 000 000 000 000 000 000 |
| Zepto | The SI prefix factor corresponding to 0.000 000 000 000 000 000 001 |
| Zetta | The SI prefix factor corresponding to 1 000 000 000 000 000 000 000 |
See Also