Heavy Water Link

: It slows down neutrons in nuclear reactors without absorbing them. This allows reactors like the Canadian CANDU design to use natural uranium rather than expensive enriched uranium.

Heavy water's most famous application is in the nuclear industry, but it serves several high-tech roles: Heavy Water

: Because it is denser, ice cubes made of heavy water will sink in a glass of ordinary liquid water. 2. Primary Uses : It slows down neutrons in nuclear reactors