Wiktionary(1.50 / 2 votes)Rate this definition: 1  construct(Noun) Something constructed from parts. The artwork was a construct of wire and tubes. 2  construct(Noun) A concept or model. Bohr's theoretical construct of the atom was soon superseded by quantum mechanics. 3  construct(Verb) To build or form (something) by assembling parts.
In spectroscopy, the type of interaction between light and the material is usually â Absorption spectroscopy, Emission spectroscopy, Elastic scattering and reflection spectroscopy, Impedance spectroscopy, Inelastic scattering, Coherent or resonance spectroscopy.
Uses of NMR spectroscopy. Nuclear Magnetic Resonance (NMR) spectroscopy is an analytical chemistry technique used in quality control and reserach for determining the content and purity of a sample as well as its molecular structure.For example, NMR can quantitatively analyze mixtures containing known compounds.n the case of the 1H NMR spectrum of ethyl benzene (fig. 2), the methyl (CH 3) group is the most electron withdrawing (electronegative) and therefore resonates at the lowest chemical shift.