Watson, James Dewey

Lead and copper ions in water pose health risks and contribnte to the corrosion of pipes and fittings, as does water that is at a high or low pH. Lead solder was banned from pipes in 1986, but much old plumbing still contains a mixture of 50 percent lead and 50 percent tin solder in joints. In plumbing systems having pipes and fittings of two different metals, corrosion may lead to the failnre of joints. 

Organic contaminants snch as vinyl chloride or hydrocarbons, hormones from animal feed, and pesticides and herbicides often find their way into streams or aquifers. From these sources, the contaminants may make their way into water supplies. 

Hard water contains metallic ions, such as magnesium or calcium ions, that interact with soap to form insoluble films or scum. Hardness is not hazardous to health but may form scale in boilers and clog water pipes. Excess calcium and magnesium can be removed by ion exchange water softeners. SEE ALSO Green Chemistry Neurotoxins Toxicity Water Water Pollution. 

MacKenzie, Susan Hill (1996). Integrated Resource Planning and Management The Ecosystem Approach in the Great Lakes Basin. Washington, DC Island Press. 

Stanitski, Conrad L. Eubanks, Lucy P. Middlecamp, Catherine H. and Pienta, Norman J. (2003). Chemistry in Context Applying Chemistry to Society, 4th edition. Boston McGraw-HUl. 

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WATSON, JAMES DEWEY (1928-). James Watson, an American chemist, was a brilliant student who began college at the University of Chicago at the young age of 15. Since he was young, Watson had a passion for bird watching and this interest was probably a factor in his... 

Because Franklin and Wilkins were hardly speaking to each other, Franklin left King s College in 1953 for Birkbeck College, also in London, where she finished her DNA work and became head of the team studying tobacco mosaic virus. Franklin died of ovarian cancer on April 16, 1958, at the age of 37. see also Deoxyribonucleic Acid (DNA) Double Helix Pauling, Linus Watson, James Dewey. 

This experiment, first published in 1944, was extremely important because, for the first time, scientists had proven that DNA controls the development of a cellular feature. It also implicated DNA as the basic geuetic material of cells aud stimulated James Watson and Francis Crick to later discover its structure aud method of replicatiou. Today we uuderstaud that DNA is the fimdameutal molecule iuvolved iu heredity, see also Watson, James Dewey. 

In 1955 Austria became free of Soviet occupation, and Schrodinger returned to the University of Vienna, where he received many honors as Austria s greatest living scientist. Schrodinger retired in 1958 and died in 1961. SEE ALSO DE Broglie, Louis Quantum Chemistry Watson, James Dewey. 

Watson James Dewey, 345 Watts Robert O., 362 Weeks John D., 867 Wegener Alfred Lothar, 269 Weidmann Jean-Luc, 978 Weinberg Steven, 571 Weinfurter Harald, 3, 15 Weinhold Frank, 150 Weinreich Gabriel, 722,755 Werner Hans-Joachim, 659 Weyl Hermann, 77, 80 Wheeler John Archibald, 8, 46, 723... 

Watson, James Dewey (1928- ) US biochemist, who moved to the Cavendish Laboratory, Cambridge, in 1951 to studythe structure of DNA. In 1953 he and Francis Crick announced the now accepted two-stranded helical structure for the DNA molecule. In 1962 they shared the Nobel Prize for physiology or medicine with Maurice Wiliclns (1916-2004), who with Rosalind Franklin (1920-58) had made X-ray diffraction studies of DNA. 

Wainwright Thomas Everett 278 Walker P. Duane 571 Walmsley Stuart H. 459 Walsh Stephen P. 792 Walter John 776,789,845 Wang Yan Alexander 601,602 Watson James 878 Watson James Dewey 285 Watts Robert O. 302 Weeks John D. 748 Wegener Alfred Lothar 228 Weidmann Jean-Luc 856 Weinberg Steven 493 Weinfurter Harald 3,14, 47 Weinhold Frank 135 Weinreich Gabriel 617, 647 Werner Hans-Joachim 564 Weyl Hermaim 70, 72, 986 Wheeler John Archibald 8, 53, 105, 106, 430, 619... 

Watson, James Dewey (1928-2004) U.S. bird expert (ornithologist) who worked at the Cavendish Laboratory, Cambridge,... 

Watson, James Dewey (1928- ) American molecular biologist. James Watson is famous for his work in 1953 with Francis CRICK on the structure of DNA. Watson gave a controversial account of this work in his book The Double Helix (1968). He also wrote several other autobiographical and popular books as well as co-authoring textbooks on molecular biology. He shared the 1962 Nobel Prize for medicine with Crick and Maurice WILKINS for their discovery of the structure of DNA. 

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