Dog Pup. These cute pups are part of the sled dog team at Denali -- the only national park in the U.S. with working dogs. Sled dogs have an essential role in the life and culture of Alaska, and Denaliâs team helps protect a national park and the wildlife, scenery and wilderness therein.
a branch of physics that studies the structure of the atomic nucleus, the processes of radioactive decay, and the mechanism of nuclear reactions. The meaning of the term is frequently expanded to include the physics of elementary particles as well. Sometimes areas of research that have become independent branches of technology, such as accelerator technology and nuclear power industry, continue to be considered as branches of nuclear physics.
Nuclear chemistry is a sub-discipline of chemistry that involves the chemical reactions of unstable and radioactive elements where both electronic and nuclear changes can occur. The substance (or substances) initially involved in a chemical reaction are called reactants or reagents. Chemical reactions are usually characterized by a chemical change, and they yield one or more products, which usually have properties different from the reactants.