NonDimensionalPhysicalConstant

planck.models.NonDimensionalPhysicalConstant

NonDimensionalPhysicalConstant(symbol, name=None, value=None)

Bases: float

Parameters:

Name	Type	Description	Default
symbol	str	Constant symbol	required
name	str	Constant name	None
value	float	Constant value	None

Examples:

from planck import models

const = models.NonDimensionalPhysicalConstant(
    "gamma_air", "Ratio of specific heats (cp/cv) for air", 1.4
)
print(const)
'''
Ratio of specific heats (cp/cv) for air [gamma_air]:
1.4
'''

Source code in planck/models/nondimensionalphysicalconstant.py

def __init__(
    self,
    symbol: str,
    name: str = None,
    value: float = None,
):
    """
    Non-dimensional physical constant

    Parameters
    ----------
    symbol:
        Constant symbol
    name:
        Constant name
    value:
        Constant value

    Examples
    --------
    ```py
    from planck import models

    const = models.NonDimensionalPhysicalConstant(
        "gamma_air", "Ratio of specific heats (cp/cv) for air", 1.4
    )
    print(const)
    '''
    Ratio of specific heats (cp/cv) for air [gamma_air]:
    1.4
    '''
    ```
    """
    float.__init__(value)
    self.symbol = symbol
    self.name = name