> Can I be dogmatic about this ? I wish you could, but I don't think so, because even though those sources call it that, others don't. I agree with your thinking, but usage is usage.
> a SAD experiment is a single wavelength experiment where you are using the > anomalous/dispersive signals for phasing I think "dispersive" usually refers to differences caused by changes in f'/f" between wavelengths, no? JPK ******************************************* Jacob Pearson Keller Northwestern University Medical Scientist Training Program email: j-kell...@northwestern.edu *******************************************