2.2。 Passive lighting system<br><br>In this second position, the passive lighting system separates the dependence of energy. With the utilization of sunlight, indoor lighting can be achieved through the collection of sunlight and the reflection of sunlight (Fang et al., 2018).<br>While this is true, some passive lighting systems are designed to be non-mobile and static systems, and modern designs use mechanical mechanisms in light optimized from the sun (Guan et al., 2014).
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