Usage History of 'luminance'

The following chart shows how frequently 'luminance' appeared in printed materials over time. For example, the word 'luminance' occurred 2 times in books in 1826 and 24,038 times in 2008. From 1826 to 2008, the word 'luminance' was used a total of 815,749 times in books scanned by Google. See Reference: Google Ngram project.

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