By Science News, 12:15 PM February 23, 2012

Sinking heavy ice
The picture in “From the Archive” (“Self-experimenter didn’t suffer,” SN: 1/28/12, p. 32) shows heavy water ice sinking in a glass of water while alongside, light water ice floats. What is not clear is what kind of water is in the glasses. If heavy water ice were in a glass of heavy water, would it also float?
Robert Chester, Tumwater, Wash.

The picture shows a heavy water ice cube sinking in normal water. Like normal water, heavy water expands when it freezes, becoming ...

Source URL: https://www.sciencenews.org/article/letters-105