X-Nico

unusual facts about water vapour



Jean-André Deluc

He ascertained that water was denser about 40 °F (4 °C) (and not at the freezing temperature); he was the originator of the theory, later reactivated by John Dalton, that the quantity of water vapour contained in any space is independent of the presence or density of the air, or of any other elastic fluid.


see also