Why don't the thermos bottle stopper jump out?
Thermal expansion and contraction.Halo, with temperature and pressure, you take a closer look at the high school physics book.
When Hou is cooled, the air pressure in the thermos bottle drops. The external pressure is greater than the internal pressure of the thermos bottle...It is difficult to pull out the cork!Show that your home thermos bottle insulation effect is particularly bad, I suggest you change a new thermos bottle!
Because of your thermos bottle stopper and bottle mouth with tight, and you are filled with water, the bottle has some hot pressing, with the bottle cap came out, inside and outside the formation of a certain pressure difference led to
