Definition of Spectroscopy Introduction

Spectroscopy is the use of the absorption, emission, or scattering of electromagnetic radiation by matter to qualitatively or quantitatively study the matter or to study physical processes.

The matter can be atoms, molecules, atomic or molecular ions, or solids. The interaction of radiation with matter can cause redirection of the radiation and/or transitions between the energy levels of the atoms or molecules.

Related topics
  • Electromagnetic Radiation
  • Electromagnetic Spectrum
  • Interaction of Light with Matter
  • Spectroscopy Index - information on specific spectroscopic techniques.

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