Transmission Measurements on Opal Materials
- 1 March 1955
- journal article
- Published by SAGE Publications in Transactions of the Illuminating Engineering Society
- Vol. 20 (3_IEStrans) , 109-119
- https://doi.org/10.1177/147715355502000302
Abstract
Knowledge of the transmission factors of opal diffusing materials is important to manufacturers of the materials and to lighting fitting designers. Some of the factors affecting measurement of this quantity are discussed, instruments for laboratory use and factory process control are described and their performance assessed.Keywords
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