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 Bohr's theoretical construct of the atom was soon superseded by quantum mechanics. 3  construct(Verb) To build or form (something) by assembling parts.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.
Definition of Infrared Spectroscopy. Infrared spectroscopy (IR) is a characterization tool chemists use to help determine the molecular structure.IR capitalizes on the concept that functional groups absorb specific frequencies of energy based on their structure.When a functional group absorbs energy, it can vibrate in a bending or stretching mode and the characteristic energy for this vibrational mode is reported in wavenumbers.R capitalizes on the concept that functional groups absorb specific frequencies of energy based on their structure. When a functional group absorbs energy, it can vibrate in a bending or stretching mode and the characteristic energy for this vibrational mode is reported in wavenumbers.