Principles of optics for paper surfaces Principles of light, its nature and interaction with surfaces and material is explained briefly in this article. Light, refractive index and Fresnel’s equations Light can be described either as a small energy particle (photon) or as an electromagnetic wave. The photon concept explains how light interacts with electron structures
Authors & references
Professor Jouni Paltakari, Aalto University
Based on: Pauler, N. Paper optics (Chapter 4). In: Niskanen, K. (ed), Paper Physics, (Book 16), Papermaking Science and Technology. 2nd edition. Jyväskylä, 2008, Finnish Paper Engineers’ Association/Paperi ja Puu Oy. pp. 128–180.
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