From: utzoo!decvax!harpo!npoiv!alice!rabbit!jj Newsgroups: net.physics Title: Re: adding cold milk to hot tea Article-I.D.: rabbit.1029 Posted: Thu Jan 6 19:03:59 1983 Received: Fri Jan 7 03:01:55 1983 References: watmath.4140 linus.2212 My parents used to float the cream on top of the tea. There was clearly a phase boundary between the cream and the tea that stayed there for most of the time it took to dring the tea. How might this affect the problem. rabbit!jj