'''lib/nmr.py'''
frequency_to_rad_per_s(frq=None, B0=None, isotope=None):
<source lang="python">
"""Convert the given frequency from ppm to rad/s units."""
return frq * 2.0 * pi * B0 / g1H * return_gyromagnetic_ratio(isotope) * 1e-6
</source>
'''specific_analyses/relax_disp/disp_data.py'''