I'd start by focusing on the fact that spectroscopy is essentially a series of unrelated disciplines, since lots of phenomena can be described along a spectrum. So, for example, mass spec and NMR ...

Spectroscopy has many applications, ranging from fundamental tests of quantum electrodynamics and investigations of molecular ...

Mass spectrometry (MS) is an analytical technique used to identify and quantify molecules based on their mass-to-charge ratio (m/z). It provides valuable information about the chemical composition, ...