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6.2.4.3 Constants ¶

During your analysis it is often necessary to have certain constants like the number \(\pi\). The “operators” in this section do not actually take any operand, they just replace the desired constant into the stack. So in effect, these are actually operands. But since their value is not inserted by the user, we have placed them in the list of operators.

e ¶

Euler’s number, or the base of the natural logarithm (no units). See Wikipedia.

pi ¶

Ratio of circle’s circumference to its diameter (no units). See Wikipedia.

c ¶

The speed of light in vacuum, in units of \(m/s\). see Wikipedia.

G ¶

The gravitational constant, in units of \(m^3/kg/s^2\). See Wikipedia.

h ¶

Plank’s constant, in units of \(J/Hz\) or \(kg\times m^2/s\). See Wikipedia.

au ¶

Astronomical Unit, in units of meters. See Wikipedia.

ly ¶

Distance covered by light in vacuum in one year, in units of meters. See Wikipedia.

avogadro ¶

Avogadro’s constant, in units of \(1/mol\). See Wikipedia.

fine-structure ¶

The fine-structure constant (no units). See Wikipedia.