Have you ever heard of an MRI? Magnetic Resonance Imaging, to be more detailed. If you have ever had an injury to body tissue, I am willing to bet you have possibly had a MRI scan. Well, it turns out that chemists use a very similar instrument to look at molecules. I'll come back to the MRI a bit later. The instrument that chemists use is called an NMR spectrometer, or a Nuclear Magnetic Resonance spectrometer. So how does this instrument work? Well, to understand the