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(physics) The luminous flux incident on unit area of a surface; measured in lux or lumens.
Add or change lights to provide more even illuminance.
For this study the lighting control was defined with a set point of 500 lux as the required illuminance for office use.
The average horizontal illuminance over the whole area on the unobstructed floor should not be less than 1 lux.
We also should be looking to challenge the concept of an average maintained illuminance across the working plane.
Both dawns had a maximum illuminance of 275 lux.
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