A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Results of scientific measurements with elaborate photometric equipment made recently to develop new data on light depreciation for various types of luminaires under varying dirt conditions are given in charts and tables; information on rate of depreciation of luminaire efficiency when ventilated as compared with non-ventilated. Before 1st Western Plant Maintenance Conference, Los Angeles, Calif.
Results of scientific measurements with elaborate photometric equipment made recently to develop new data on light depreciation for various types of luminaires under varying dirt conditions are given in charts and tables; information on rate of depreciation of luminaire efficiency when ventilated as compared with non-ventilated. Before 1st Western Plant Maintenance Conference, Los Angeles, Calif.
New data on lighting equipment maintenance
Elec Construction Maintenance
Jones, J.R. (author)
1954
3 pages
Article (Journal)
English
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Maintenance equipment for municipal lighting street lamp
| European Patent Office | 2021