daylight factor


Definition of daylight factor

: the ratio of the illumination from windows at any point indoors to that out in the open, the test surface being horizontal in each case

called also window-efficiency ratio

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First Known Use of daylight factor

1915, in the meaning defined above

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Time Traveler for daylight factor

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The first known use of daylight factor was in 1915

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Dictionary Entries Near daylight factor

daylight blue

daylight factor

daylight glass

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Statistics for daylight factor

Cite this Entry

“Daylight factor.” Dictionary, Merriam-Webster, Accessed 27 Jan. 2022.

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