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Acest proces se numeşte depunere. Când temperatura creşte, dioxidul de carbon se transformă înapoi în gaz.
Ceva foarte interesant se întâmplă, însă, când introduci o monedă într-un bloc de gheaţă uscată. Întâi produce o ţiuitură stridentă, iar apoi începe să vibreze, de parcă moneda ”ar tremura”.
Acest lucru se întâmplă ca urmare a faptului că temperatura mai ridicată a metalului sublimează gheaţa şi cauzează o schimbare a presiunii. Pe măsură ce gazul împinge moneda, presiunea face ca aceasta să ”tremure”.
Sursă: IFLScience
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