Gostota zraka (ρ) je nad morsko gladino pri 20°C približno 1.2 kg/m3. To je približno 800× manj kot je gostota vode.
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May 18th, 2008 at 12:32 pm
Zanimivo
May 19th, 2008 at 4:37 am
Ne bi si mislil, da je zrak tok težki