Image:Thermally Agitated Molecule.gif

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Summary

Shown here is the thermal motion of a segment of protein alpha helix. Molecules have various internal vibrational and rotational degrees of freedom. This is because molecules are complex objects; they are a population of atoms that can move about within a molecule in different ways. This makes molecules distinct from the noble gases such as helium and argon, which are monatomic (consisting of individual atoms).  Heat energy is stored in molecules’ internal motions which gives them an internal temperature. Even though these motions are called “internal,” the external portions of molecules still move—rather like the jiggling of a water balloon.

Greg L 01:23, 18 October 2006 (UTC)

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  • (del) (cur) 04:46, 30 August 2006 . . Greg L ( Talk | contribs) . . 280×280 (161,716 bytes) (There are other forms of heat energy besides translational motions. Molecules also have various ''internal'' vibrational and rotational degrees of freedom. This is because molecules are complex objects; they are a population of atoms that can move ab)

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