# Module `redvox.common.constants`

This is an auxiliary file where regularly used constants can be stored and exported.

Expand source code

    """
    This is an auxiliary file where regularly used constants can be stored and exported.
    """

    # noinspection Mypy
    import numpy as np

    GRAVITY_M_PER_S2: float = 9.80665  # acceleration of gravity in m/s^2
    AVG_SEA_LEVEL_PRESSURE_KPA = (
        101.325  # average sea level pressure around the world in kPa
    )
    MOLAR_MASS_AIR_KG_PER_MOL = 0.02896  # molar mass of air in kg per mol
    STANDARD_TEMPERATURE_K = 288.15  # standard surface temperature in K
    UNIVERSAL_GAS_CONSTANT_KG_M2_PER_K_MOL_S2 = (
        8.3143  # universal gas constant in (kg * m^2) / (K * mol * s^2)
    )
    # constant used in barometric formula
    #   source: https://www.math24.net/barometric-formula/
    MG_DIV_BY_RT = (MOLAR_MASS_AIR_KG_PER_MOL * GRAVITY_M_PER_S2) / (
        STANDARD_TEMPERATURE_K * UNIVERSAL_GAS_CONSTANT_KG_M2_PER_K_MOL_S2
    )

    EARTH_RADIUS_M = 6367000.0  # earth's estimated radius in meters

    KPA_TO_PA: float = 1000.0  # kilopascals in one pascal
    EPSILON: float = np.finfo(np.float32).eps
    PI: float = np.pi
    DEG_TO_RAD = PI / 180.0  # converts degrees to radians
    RAD_TO_DEG = 180.0 / PI  # converts radians to degrees

    SECONDS_PER_HOUR: int = 3_600
    SECONDS_PER_DAY: int = 86_400

    NAN: float = float("nan")