| Autor: |
Stockham, Leo W., Love, Tom J. |
| Zdroj: |
Journal of the Optical Society of America (1917-1983); February 1970, Vol. 60 Issue: 2 p251-254, 4p |
| Abstrakt: |
Oetking has presented experimental evidence that the radiance reflected from magnesium oxide surfaces as well as most others tested increases markedly when the surface is viewed from within a few degrees of the direction of incidence. Because magnesium oxide is commonly used as a diffuse coating material in integrating spheres, a question arises regarding the error caused by this effect. This work examines the magnitude of the error introduced by neglecting the so-called “opposition effect” in the measurement of reflectance using integrating spheres and shows the error to be negligible. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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