Egg in a Bottle

need to experience: a boiled egg, a bottle with a wide neck, but smaller than the diameter of the eggs, matches and paper. 1. Net boiled egg.
2. ignite paper from the match.
3. Throw a burning paper into the bottle.
4. Place the egg in the neck of the bottle.
Subtotal: air expands when heated and contracts when cooled. When the bottle is burning paper, the air in the bottle becomes more voluminous. As soon as we close the neck of the bottle eggs, terminate the access of oxygen and burning the paper stops. Thereafter, the air in the bottle cools and contracts. Due to the differential pressure in the bottle and the outside, the egg is pulled into the bottle.

Source: mirfactov.com/