All materials have same molar specific heat, cf. the Dulong–Petit law. Is it an evidence of atoms? What other examples are there for atomic theory?
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same molar specific heat? – Kyle Kanos Aug 30 '13 at 11:21
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2Related: http://physics.stackexchange.com/q/1566/2451 – Qmechanic Aug 30 '13 at 11:23
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you misunderstood me. I wanted to say about dulong-petit value. Your link was not useful. @Qmechanic – Self-Made Man Aug 30 '13 at 13:13
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1@KaziarafatAhmed: That isn't a valid reason to say that the link wasn't useful! . (1) You didn;'t even specify that in your question,. (2) Still, it shares the same theme, and may be useful to others. *The aim of SE is not to be useful to the OP only.* . – Abhimanyu Pallavi Sudhir Aug 30 '13 at 14:05
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The similar molar specific heats show that the materials have the same number of degrees of freedom per mole accessible at room temperature. This is certianly explained by the idea that they are made up of fundamental entities, with the same number of entities per mole, so yes it is evidence for the existance of atoms. I'm not sure I'd call it conclusive evidence on it's own.
John Rennie
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