unitconversion.py 文件源码

def spectral_factor(wavelength, wavelength_unit, frequency_unit):

    """
    This function ...
    :param wavelength:
    :param wavelength_unit:
    :param frequency_unit:
    :return:
    """

    # Convert string units to Unit objects
    if isinstance(wavelength_unit, basestring): wavelength_unit = u.Unit(wavelength_unit)
    if isinstance(frequency_unit, basestring): frequency_unit = u.Unit(frequency_unit)

    conversion_factor_unit = wavelength_unit / frequency_unit

    # Calculate the conversion factor
    return (wavelength**2 / speed_of_light).to(conversion_factor_unit).value

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