Nemilov equation in the model of delocalized atoms

The relative temperature range (δTg/Tg), which characterized the transition from liquid to glass, was a unique function of the fraction of fluctuation volume fg, frozen at the glass transition temperature Tg. It was shown that δTg value of the majority of amorphous substances was only about 0,7 % of the glass transition temperature Tg. Narrow range of temperatures δTg agreed with the classical idea of Simon about a small magnitude of the temperature range the structure was frozen.