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Egg in a bottle - physics experiment

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Uploaded on Jun 4, 2009

http://www.fizik.si
Put a burning piece of a paper into a bottle with a neck slightly narrower than an egg. Burning paper will warm up and expand the air in the bottle and molecules of air will leak out of the bottle. Put an egg -- boiled and peeled on the neck of the bottle. When the fire goes out, the air in the bottle cools down. Atmospheric pressure in the bottle decreases. As a result of different atmospheric pressures, higher outer pressure pushes the egg into the bottle. To get the egg out of the bottle we have to increase the atmospheric pressure in the bottle (by air blowing or heating). This is physics experiment for science project.

http://www.fizik.si
V steklenico z vratom, malo ožjim od jajca, vstavimo goreč papir. Ta segreje in razpenja zrak v steklenici, molekule zraka uhajajo iz steklenice. Na vrat steklenice položimo olupljeno kuhano jajce. Ko ogenj ugasne, se zrak v steklenici ohlaja. Tlak v steklenici se zmanjša. Zaradi razlike tlakov, večji zunanji zračni tlak potisne jajce v steklenico. Jajce spravimo iz steklenice tako, da zvečamo tlak v njej (pihanje v steklenico, segrevanje).

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