May be the frequency with the phonon. Making the approximation the frequency is inversely proportional into the wavelength, It absolutely was lengthy considered that phonon theory is unable to demonstrate the heat potential of liquids, since liquids only maintain longitudinal, although not transverse phonons, which in solids are answerable for https://www.facebook.com/permalink.php?story_fbid=pfbid0q9ndf1BJBDTdkYp47dhgkVwzjCa9uvUfrph1G5iY6jDFJ3CFiubTvYb2BugmQWHnl&id=61562415773754&__cft__[0]=AZUXObaQYt-gIoMxrW_KprnWU9S9uDqrPLJ9OYNPUyTxEgdQhL5RNZwEptVpMksEZCfj3B4zmy4dAGn59S2XXsODDpfvcpIzI0HLcqXXgN-2-lkH84CiudiaZ4UeKaXhFh6T1Yr8X50femqGbt_mSIJRaubt4AnKKX__f18GQwqXKPvNpSL_qZ-80EcFQ6gLjWH7-TAXqBj801AcshJePcsO&__tn__=%2CO%2CP-R