'Overridden for EMConstant to raise a `TypeError`
emphasizing that there are multiple EM extensions to CGS.'

@property
def cgs(self):

    raise TypeError(u'Cannot    convert    EM    constants    to    cgs    because    there    are    different    systems    for    E.M    constants    within    the    c.g.s    system    (ESU,    Gaussian,    etc.).    Instead,    directly    use    the    constant    with    the    appropriate    suffix    (e.g.    e.esu,    e.gauss,    etc.).')
