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A platform for research: civil engineering, architecture and urbanism
Large photometric sphere
Increase in physical size of light sources has required construction of 15-ft integrating sphere at Bureau for measurement of total light output; sphere, believed to be largest in world, is made of waterproof molded mahogany plywood.
Large photometric sphere
Increase in physical size of light sources has required construction of 15-ft integrating sphere at Bureau for measurement of total light output; sphere, believed to be largest in world, is made of waterproof molded mahogany plywood.
Large photometric sphere
U S Bur Standards -- Tech News Bul
1948
2 pages
Article (Journal)
English
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