Can implosion. Experiment with Pressure and Temperature.

In this experiment I put a bit of water in a beverage can amd heat it until it boils. Then I sink it in cold water and the can implodes, it gets crushed. Implosion is the opposite of explosion. At Implosions the forces come from outside to inside and at explosions is the other way around.
If we repeat the experiment with an empty can, only with air, it doesn't crush, when we introduce it in cold water. Why? You can write your explanation at the comments section. In next episode I will show the explanation.
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