North light (architecture)
North light is natural light coming from the north (in the Northern Hemisphere). It is diffused sun light and hence does not create sharp shadow. It consists of light which comes from the blue sky rather than directly from the sun. It is preferred and considered ideal by architects. It is also preferred natural light by artists as well.
North light has luminous efficacy /lm/W 48, colour correlated temperature/K 6500 and colour rendering index/R is equal to 94.
In the Southern Hemisphere, south light has the same characteristics.
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- ELAINE LOUIE (March 27, 2003). "CURRENTS: ARCHITECTURE; A Photo Studio Where Day Can Be Night - New York Times". Nytimes.com. Retrieved 2012-07-07.
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