Here's another odd question to be answered . In fact, the method of the spoon is not foolproof, but it can be a help to slow the loss of gas from the bottle once opened. This system can be used with all soft drinks, and also water, cola, beer, etc..
The system works if the bottle is open, is placed in a refrigerator with a teaspoon of metal stuck in his neck.
Why? Simple. The handle of the spoon, just metal, glass stays colder, maintaining a low temperature air in the bottle. The bubble of air rising from the neck to drink, meet cool area and the principle of Archimedes, would tend to decrease volume and increase in density, falling down.
Over time, however, both the heat capacity of the spoon, and the fact that the bubbles in this up and down can collide and break, the drink will tend However a flat.
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