def fried_parameter_to_seeing(r0, wavelength):
    """Calculate the FWHM of the seeing from the Fried parameter.

	Parameters
	----------
	scalar
		The Fried parameter.
	wavelength : scalar
		The wavelength at which the Fried parameter is measured.

	Returns
	-------
	scalar
		The FWHM of the seeing.
	"""
    return 0.98 * wavelength / r0
