Both specific heat and the heat of vaporization vary with the liquid used. 伯莎M.克拉克.科学通论.
Experiment shows not only that vapor gives out heat during condensation, but that the amount of heat thus set free is exactly equal to the amount absorbed during vaporization. 伯莎M.克拉克.科学通论.
Very careful experiments show the exact heat of vaporization to be 536. 伯莎M.克拉克.科学通论.