A ball filled with light gas rises to the ceiling of the room. If this gas is warm air, then after a while it cools down and the ball goes down. But the balloon goes down even when it is filled with helium! Why is this happening?
the balloon with helium also descends over time, since helium atoms can penetrate the rubber shell, and the balloon is deflated a little.
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.