Water containing significantly more than the natural proportion (1 in 6500) of heavy hydrogen (deuterium) atoms to ordinary hydrogen atoms. (Hydrogen atoms have one proton, deuterium atoms have one proton and one neutron.) Heavy water is used as a moderator in some reactors because it slows down neutrons effectively and does not absorb them (unlike light, or normal, water) making it possible to fission natural uranium and sustain a chain reaction.
Water in which the hydrogen atoms are the heavy hydrogen isotope, deuterium. It is sometimes called deuterium oxide (D2O).
Water containing a significantly greater proportion of heavy hydrogen (deuterium) atoms to ordinary hydrogen atoms than is found in ordinary (light) water. Heavy water is used as a moderator in some reactors because it slows neutrons effectively and also has a low cross-section for absorption of neutrons.
Fast current, large waves, usually associated with holes, boulders, and general turbulence. See Big Water.
A type of hydrogen atom that may be used as fuel for fusion power plants. Also called Deuterium, it is found in abundance in the seas.
A nuclear reactor which uses heavy water as a moderator and heat transfer agent
Water containing the heavy hydrogen isotope deuterium (hydrogen 2) which consists of a proton and a neutron. D2O occurs naturally as about one part in 6000 of ordinary water. D2O is a very efficient moderator, enabling uranium to be used in a fission reactor without enrichment.
water containing a substantial proportion of deuterium atoms, used in nuclear reactors
A molecule of water contains two atoms of hydrogen and one of oxygen. Most water comprises of hydrogen/ oxygen but a small percentage is composed of another hydrogen isotope, deuterium and oxygen. Deuterium differs from hydrogen by having one neutron in the nucleus of each atom. Deuterium water is given the formula D2O. There is approx. 1 part in 5000 D2O in normal water and it can be concentrated by electrolysis. D2O had a higher boiling point (101.4 °C) and melts at 3.6 °C
High velocity, turbulent water, usually through rapids and other constricted waterways.
A molecule composed of one oxygen atom and two deuterium atoms also known as deuterium oxide
A huge flow of water through rapids marked by extreme velocity difference in currents and violent turbulence.
Water in which the hydrogen is composed of over 99 percent deuterium atoms. The neutron in the deuterium nucleus allows this type of water to slow, or moderate, neutrons from fissioning uranium, permitting a sustained chain-reaction in reactors using natural uranium as fuel. See; Deuterium.
Water containing deuterium, a heavy isotope of hydrogen.
(D2O) Water that contains 2H, rather than 1H. Heavy water is about 11% denser than ordinary water.
This 10% heavier than water naturally occurs in a few saline lakes and in deep sea water. It bonds more strongly than regular water with the skin and other connective tissue preventing the skin from drying out as quickly or as deeply. Nutrients applied while the skin is still damp with the heavy water de-ionized molecule will also be better absorbed.
Chemical composition identical with regular(light) water - H20. However hydrogen is replaced with Deuterium(see above) which has extra neutron. Hence the name, heavy water and formula D20
Water with a high proportion of deuterium (one proton and one neutron) instead of hydrogen (with one proton, but no neutron in the nucleus).
Water containing an elevated concentration of molecules with deuterium ("heavy hydrogen") atoms.
(Also known as deuterium oxide.) Water composed of oxygen and deuterium.
Heavy water is a loose term which usually refers to deuterium oxide, D2O or 2H2O. Its physical and chemical properties are somewhat similar to those of water, H2O. The hydrogen atoms are of the heavy isotope deuterium, in which the nucleus contains a neutron in addition to the proton found in the nucleus of the hydrogen atom.