Why does a bucket of water brought in from the cold start to be covered with water droplets?

Excess moisture is released from the air layer cooled from a cold bucket, since the relative humidity of the air increased during cooling, and the air became oversaturated.

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.