Encyclopedic Dictionary of Polymers

2011 Edition
| Editors: Jan W. Gooch

Reflection of Light by a Transparent Medium in Air

  • Jan W. Gooch
Reference work entry
DOI: https://doi.org/10.1007/978-1-4419-6247-8_9862
n (Fresnel’s formulae) If i is the angle of incidence, r the angle of refraction, n 1 the index of refraction for air (nearly equal to unity), n 2 index of refraction for a medium, then the ratio of the reflected light to the incident light is,
$$R = {1 \over 2}\left( {{{\sin ^2 (i - r)} \over {\sin ^2 (i + r)}} + {{\tan ^2 (i - r)} \over {\tan ^2 (i + r)}}} \right)$$
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Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Jan W. Gooch
    • 1
  1. 1.AtlantaUSA