sustain a reaction

См. также в других словарях:

• reaction mechanism — Introduction       in chemical reactions (chemical reaction), the detailed processes by which chemical substances are transformed into other substances. The reactions themselves may involve the interactions of atoms (atom), molecules (molecule),… …   Universalium

• chain reaction — 1. Physics. a self sustaining reaction in which the fission of nuclei of one generation of nuclei produces particles that cause the fission of at least an equal number of nuclei of the succeeding generation. 2. Chem. a reaction that results in a… …   Universalium

• photochemical reaction — Chemical reaction initiated by absorption of energy in the form of visible (light), ultraviolet, or infrared radiation. Primary photochemical processes occur as an immediate result, and secondary processes may follow. The most important example… …   Universalium

• Nuclear chain reaction — A possible nuclear fission chain reaction. 1. A uranium 235 atom absorbs a neutron, and fissions into two new atoms (fission fragments), releasing three new neutrons and a large amount of binding energy. 2. One of those neutrons is absorbed by an …   Wikipedia

• electrochemical reaction — ▪ chemistry Introduction       any process either caused or accompanied by the passage of an electric current and involving in most cases the transfer of electrons between two substances one a solid and the other a liquid.       Under ordinary… …   Universalium

• Combat stress reaction — Shell shock and shell shocked redirect here. For other uses, see Shell shock (disambiguation). Image from World War I taken in an Australian dressing station near Ypres in 1917. The wounded soldier in the lower left of the photo has a dazed… …   Wikipedia

• chain reaction — /tʃeɪn riˈækʃən/ (say chayn ree akshuhn) noun 1. Physics a nuclear reaction which produces enough neutrons to sustain itself. 2. Chemistry a reaction which results in a product necessary for the continuance of the reaction. 3. a series of… …  

• Nuclear weapon design — The first nuclear weapons, though large, cumbersome and inefficient, provided the basic design building blocks of all future weapons. Here the Gadget device is prepared for the first nuclear test: Trinity. Nuclear weapon designs are physical,… …   Wikipedia

• Internal heat — is the heat source from the interior celestial objects, such as planets, brown dwarfs, and stars, caused by gravity and decaying radioactive materials. The amount of internal heat depends on mass; the more massive the object, the more internal… …   Wikipedia

• ITER — is an international tokamak (magnetic confinement fusion) research/engineering proposal for an experimental project that will help to make the transition from today s studies of plasma physics to future electricity producing fusion power plants.… …   Wikipedia

• Pyrotechnic composition — A pyrotechnic composition is a substance or mixture of substances designed to produce an effect by heat, light, sound, gas or smoke or a combination of these, as a result of non detonative self sustaining exothermic chemical reactions.… …   Wikipedia