Calculate the cyclotron frequency in Hz given a magnetic field strength in Gauss.

    This is in cycles per second not radians per second; i.e. there is a 2π in
    the denominator: ν_B = e B / (2π m_e c)

def calc_nu_b(b):
    """Calculate the cyclotron frequency in Hz given a magnetic field strength in Gauss.

    This is in cycles per second not radians per second; i.e. there is a 2π in
    the denominator: ν_B = e B / (2π m_e c)

    """
    return cgs.e * b / (2 * cgs.pi * cgs.me * cgs.c)