def Jasper(T, a, b):
sigma = (a - b*(T-<NUM_LIT>))/<NUM_LIT:1000><EOL>return sigma<EOL>
r'''Calculates surface tension of a fluid given two parameters, a linear
    fit in Celcius from [1]_ with data reprinted in [2]_.

    .. math::
        \sigma = a - bT

    Parameters
    ----------
    T : float
        Temperature of fluid, [K]
    a : float
        Parameter for equation. Chemical specific.
    b : float
        Parameter for equation. Chemical specific.

    Returns
    -------
    sigma: float
        Surface tension [N/m]

    Notes
    -----
    Internal units are mN/m, and degrees Celcius.
    This function has been checked against several references.

    Examples
    --------
    >>> Jasper(298.15, 24, 0.0773)
    0.0220675

    References
    ----------
    .. [1] Jasper, Joseph J. "The Surface Tension of Pure Liquid Compounds."
       Journal of Physical and Chemical Reference Data 1, no. 4
       (October 1, 1972): 841-1010. doi:10.1063/1.3253106.
    .. [2] Speight, James. Lange's Handbook of Chemistry. 16 edition.
       McGraw-Hill Professional, 2005.