Igla v kopici sena

author: Žan Luka Bole, Osnovna šola Prestranek
published: April 12, 2011,   recorded: March 2011,   views: 2402

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V videoposnetku je prikazan posnetek poskusa, ki nam pokaže, kako na preprost način najdeš iglo v senu. Seno, v katerega smo zamešali kovinsko iglo, damo v vodo in igla potone, seno pa plava na vodi.

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