Add Yahoo as a preferred source to see more of our stories on Google. photo-1537035448858-6d703dbc320f Indoor air can get a bit stale, especially during the chillier months, when you probably aren't ...

(Nanowerk News) It is no mystery that light is essential to human life. Since the discovery of fire, humans have developed various artificial light sources, such as incandescent lamps, gaslights, ...

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Researchers developed a novel tunable ultrasonic liquid crystal light diffuser that allows changing the diffusion direction It is no mystery that light is essential to human life. Since the discovery ...