Measuring dispersal. the entropy The first law led to the introduction of the internal energy, a property of state. The Second Law also leads to a property, the entropy. The First law uses the internal energy to identify the permissible changes, the Second law uses the entropy to identify the natural changes among these permissible changes 4上一内容下一内容令回主目录 返回 2021/2/21上一内容 下一内容 回主目录 返回 2021/2/21 Measuring dispersal : the entropy The First Law led to the introduction of the internal energy, a property of state. The Second Law also leads to a property, the entropy. The First Law uses the internal energy to identify the permissible changes; the Second Law uses the entropy to identify the natural changes among these permissible changes