reflection

https://doi.org/10.1351/goldbook.08281
Process by which electromagnetic radiation is reflected by a sample. For non-scattering samples the term means Fresnel reflection; for scattering samples the term includes regular reflection and volume reflection or diffuse reflection.
Source:
PAC, 2021, 93, 647. (Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)) on page 671 [Terms] [Paper]