 Some educators propose that the energy dispersal idea is easier to understand than the traditional approach.The concept has been used to facilitate teaching entropy to students beginning university chemistry and biology.The term "entropy" has been in use from early in the history of classical thermodynamics, and with the development of statistical thermodynamics and quantum theory, entropy changes have been described in terms of the mixing or "spreading" of the total energy of each constituent of a system over its particular quantized energy levels.