By John Daintith and Elizabeth Martin (Editors)
Hailed as "handy and readable" (Nature) and "well worthy searching" (New Scientist), this best-selling dictionary comprises 9,200 alphabetically equipped entries on all facets of chemistry, physics, biology (including human biology), earth sciences, and astronomy. as well as a wealth of trustworthy, updated entries, clients will locate important brief biographies of major scientists, full-page illustrated gains on matters similar to the sun procedure and Genetically transformed Organisms, and chronologies of particular medical matters together with plastics, electronics, and cellphone biology. This new version comprises elevated assurance of worldwide warming, forensic technological know-how, astrophysics, quantum idea, and the sun method. Supported by way of over two hundred diagrams and illustrations, the Dictionary of technological know-how additionally comprises steered internet hyperlinks for plenty of entries, accessed and stored modern through the better half site. eventually, it has appendices on SI devices, primary constants, geological time scale, a simplified type of the plant and animal kingdoms, and the periodic desk. either concise and wide-ranging, this quantity is a perfect reference paintings for college students or for a house library.
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Additional resources for A Dictionary of Science, Sixth Edition (Oxford Paperback Reference)
See also ; ; ; Z . A • Information about IUPAC nomenclature H C CH3 C H2 H2C H C H3C CH3 but-1-ene but-2-ene C H Alkenes. Butene isomers. alkoxides Compounds formed by reaction of alcohols with sodium or potassium metal. Alkoxides are saltlike compounds containing the ion R–O–. alkyd resin A type of *polyester resin used in paints and other surface coating. The original alkyd resins were made by copolymerizing phthalic anhydride with glycerol, to give a brittle cross-linked polymer.
The corkscrew rule states that a right-handed corkscrew is analogous to an electric current and its magnetic Üeld with the direction of the screw being analogous to electric current; the direction in which the corkscrew is being turned is analogous to the direction of lines of force of the Üeld. ampere-turn The SI unit of *magnetomotive force equal to the magnetomotive force produced when a current of one ampere Ûows through one turn of a magnetizing coil. amphetamine A drug, 1-phenyl-2-aminopropane (or a derivative of this compound), that stimulates the central nervous system by causing the release of the transmitters noradrenaline and dopamine from nerve endings.
In the laboratory it can be prepared by precipitation from solutions of aluminium salts. Such solutions contain the hexaquoaluminium(III) ion with six water molecules coordinated, [Al(H2O)6]3+. In neutral solution this ionizes: [Al(H2O)6]3+ ˆ H+ + [Al(H2O)5OH]2+ The presence of a weak base such as S2– or CO32– (by bubbling hydrogen sulphide or carbon dioxide through the solution) causes further ionization with precipitation of aluminium hydroxide [Al(H2O)6]3+(aq) → Al(H2O)3(OH)3(s) + 3H+(aq) The substance contains coordinated water molecules and is more correctly termed hydrated aluminium hydroxide.