Never tried the superheating water in china. I would assume that it's the lack of nucleation sites on the smooth china. Pure water can be driven well outside of normal phase-change temperatures when there's a lack of nucleation sites. The tea bag or sugar cube would merely serve as a place for the bubbles to "grow" on. It's difficult to believe that the Rossi reactor would be so pristine as to support superheating at standard pressures.
Once again, the only "conclusive" demo is the February demonstration that was, unfortunately, the most poorly documented. We really must wait-and-see. > Date: Fri, 15 Jul 2011 14:27:41 -0700 > From: [email protected] > Subject: Re: [Vo]:They say liquid water can't be hotter than boiling... > To: [email protected] > > > > ----- Original Message ----- > > From: Stephen A. Lawrence <[email protected]> > > To: [email protected] > > Cc: > > Sent: Friday, July 15, 2011 5:03:11 PM > > Subject: [Vo]:They say liquid water can't be hotter than boiling... > > > > So here's a cute experiment, done by accident while on vacation. > > > > Take a smooth china mug, and fill it with water. > > > > Stir the water, so it's swirling nicely (if you don't do this only the > > surface will get hot and the experiment probably won't work). > > > > Put it in a microwave on high power for a minute or two. I used 2 minutes, > > but > > the microwave in question was probably not very high power. > > > > Take it out, stir it *again* so it's swirling nicely, and pop it back into > > the microwave for another minute or two. > > > > Take it out. There may be a few bubbles, but on a good morning, it will > > *not* > > be boiling, not what most of us mean by boiling, anyway. > > > > Drop a teabag into the cup of water which isn't boiling. > > > > Whoa, nelly -- bubbles galore! Now it's boiling! > > > > Gosh, what was in the cup before I put the teabag in? > > I've heard you can use a microwave oven to superheat distilled water in a > smooth china mug. > This news to me that you can superheat ordinary water as long as the water is > swirling in the mug. > Harry > > > > > >
