AccelerationDueToGravity (Physical Constants Package Symbol)

AccelerationDueToGravity is the acceleration of a body freely falling in a vacuum on Earth at sea level.

BoltzmannConstant (Physical Constants Package Symbol)

BoltzmannConstant is the ratio of the universal gas constant (MolarGasConstant) to Avogadro's number (AvogadroConstant).

PlanckConstant (Physical Constants Package Symbol)

PlanckConstant is a universal constant of nature which relates the energy of a quantum of radiation to the frequency of the oscillator which emitted it.

PlanckConstantReduced (Physical Constants Package Symbol)

PlanckConstantReduced is a universal constant, equal to PlanckConstant/(2 Pi).

FindIons (Resonance Absorption Lines Package Symbol)

FindIons[wavelength_1, wavelength_2] gives the resonance absorption lines in the wavelength range between wavelength_1 to wavelength_2.

Becquerel (Units Package Symbol)

Becquerel is the derived SI unit of radioactivity.

Celsius (Units Package Symbol)

Celsius is a unit of temperature.

Centigrade (Units Package Symbol)

Centigrade is a unit of temperature.

Coulomb (Units Package Symbol)

Coulomb is the derived SI unit of electric charge.

Fahrenheit (Units Package Symbol)

Fahrenheit is a unit of temperature.