= Units of illuminance
{wiki=Category:Units_of_illuminance}
The unit of illuminance is the lux (lx). Illuminance measures the amount of light that falls on a surface per unit area. One lux is defined as one lumen per square meter. In practical terms, it quantifies the intensity of light as perceived by the human eye in terms of how well a surface is illuminated. For example, typical illuminance levels may range from around 100 lux for a well-lit room to over 10,000 lux for direct sunlight.
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