Fans, which are designed to blow dusty air out of the production area, are usually placed near the ceiling. Why?

To improve air circulation. Warm air, together with various impurities, rises, and the fan removes them from the room.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.