Constants

Complete overview of constants available on calcul.io

atomicMass

Atomic mass constant

avogadro

Avogadro's number

bohrMagneton

Borh magneton

bohrRadius

Borh radius

boltzmann

Boltzmann constant

classicalElectronRadius

Classical electron radius

conductanceQuantum

Conductance quantum

coulomb

Coulomb's constant

deuteronMass

Deuteron Mass

e

Euler's number, the base of the natural logarithm. Approximately equal to 2.71828

efimovFactor

Efimov factor

electricConstant

Electric constant (vacuum permeability)

electronMass

Electron mass

elementaryCharge

Elementary charge

false

Boolean value false

faraday

Faraday constant

fermiCoupling

Fermi coupling constant

fineStructure

Fine-structure constant

firstRadiation

First radiation constant

gasConstant

Gas constant

gravitationConstant

Newtonian constant of gravitation

gravity

Standard acceleration of gravity (standard acceleration of free-fall on Earth)

hartreeEnergy

Hartree energy

i

Imaginary unit, defined as i*i=-1. A complex number is described as a + b*i, where a is the real part, and b is the imaginary part.

Infinity

Infinity, a number which is larger than the maximum number that can be handled by a floating point number.

inverseConductanceQuantum

Inverse conductance quantum

klitzing

Von Klitzing constant

LN10

Returns the natural logarithm of 10, approximately equal to 2.302

LN2

Returns the natural logarithm of 2, approximately equal to 0.693

LOG10E

Returns the base-10 logarithm of E, approximately equal to 0.434

LOG2E

Returns the base-2 logarithm of E, approximately equal to 1.442

loschmidt

Loschmidt constant at T=273.15 K and p=101.325 kPa

magneticConstant

Magnetic constant (vacuum permeability)

magneticFluxQuantum

Magnetic flux quantum

molarMass

Molar mass constant

molarMassC12

Molar mass constant of carbon-12

molarPlanckConstant

Molar Planck constant

molarVolume

Molar volume of an ideal gas at T=273.15 K and p=101.325 kPa

NaN

Not a number

neutronMass

Neutron mass

nuclearMagneton

Nuclear magneton

null

Value null

phi

Phi is the golden ratio. Two quantities are in the golden ratio if their ratio is the same as the ratio of their sum to the larger of the two quantities. Phi is defined as `(1 + sqrt(5)) / 2` and is approximately 1.618034...

pi

The number pi is a mathematical constant that is the ratio of a circle's circumference to its diameter, and is approximately equal to 3.14159

planckCharge

Planck charge

planckConstant

Planck constant

planckLength

Planck length

planckMass

Planck mass

planckTemperature

Planck temperature

planckTime

Planck time

protonMass

Proton mass

quantumOfCirculation

Quantum of circulation

reducedPlanckConstant

Reduced Planck constant

rydberg

Rydberg constant

sackurTetrode

Sackur-Tetrode constant at T=1 K and p=101.325 kPa

secondRadiation

Second radiation constant

speedOfLight

Speed of light in vacuum

SQRT1_2

Returns the square root of 1/2, approximately equal to 0.707

SQRT2

Returns the square root of 2, approximately equal to 1.414

stefanBoltzmann

Stefan-Boltzmann constant

tau

Tau is the ratio constant of a circle's circumference to radius, equal to 2 * pi, approximately 6.2832.

thomsonCrossSection

Thomson cross section

true

Boolean value true

vacuumImpedance

Characteristic impedance of vacuum

weakMixingAngle

Weak mixing angle

wienDisplacement

Wien displacement law constant

All constants