Bobby asked Jessica if she would like to amaze her friends by showing them how she could get an an egg inside a bottle. (How did it get there?! )
They started out with boiling an egg, and peeling it. They then lit a small amount of paper and dropped it into a plastic bottle. Quickly the egg is placed on top of the bottle. As the fire burns through all the oxygen it quickly starts sucking down on the egg as the pressure is trying to equalize between inside & outside the bottle.
To get a very detailed explanation of what is happening go here.
They decided to try a glass jar the second time with a smaller hole. It went in, although I did not get a photo.
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