This strange behavior is a result of the Clausius -- Clapeyron relation .
This strange behavior can not be explained by the current model of classical mechanics , nor by nuclear or electrical models -- it can only be understood as a quantum mechanical phenomenon .
This strange behavior is a result of the Clausius -- Clapeyron relation , and can not be explained by the current model of classical mechanics , nor by nuclear or electrical models -- it can only be understood as a quantum mechanical phenomenon .