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photometric brightness

American  
[foh-tuh-me-trik brahyt-nis] / ˌfoʊ təˈmɛ trɪk ˈbraɪt nɪs /

noun

  1. Optics. luminance.


photometric brightness Scientific  
/ fō′tə-mĕt′rĭk /
  1. See luminance


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