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Gold is a heavy metal in a group known as the transition metals. Gold is also known as a precious metal (as are platinum and silver). Large amounts of gold are still used in the manufacture of coins, medals, jewelry, and art. Gold also has a number of uses in industry, medicine,...
This Eng- lish chemist described his discovery in the Philosophical Transactions of the Royal Soci- ety of London in 1804, in the article entitled On two metals, found in the black powder remaining after the solution of platina (Tennant 1804). The interesting history (differing in details from...
He then studied the properties of that gas. He found that flames burned brightly in the gas. He also found that animals could live when placed in the gas. Without knowing it, Scheele had discovered oxygen. (See sidebar on Scheele in the chlorine entry in Volume 1.) About two years ...
Name any three types of welding processes that are applied in the joining of metals.State the three platforms of computer-aided design in manufacturing engineering.Name the two electrical circuits used in strain gauge circuits in stress analysis in mechanical engineering....
largest application area is mainly used to improve the adhesion between two materials with different properties. It forms a silane elastic bridge between the two interfaces, thereby improving the mechanical, electrical insulation and anti-aging properties of the product. With the rapid development of ...
Name any three types of polarized light as used in basic optics in stress analysis in mechanical engineering. Name any three types of welding processes that are applied in the joining of metals. Name any two desirable properties of a gauging system used in mechanical engineering Name the three ...
(化學元素名詞修正表) hoping it would clean up the mess caused by unstandardized names created by the churches, Beijing Tongwenguan and Shang- hai's Jiangnan Arsenal. The two committees determined to adopt the meaning-based approach to name gaseous and other vital elements. Some of Fryer and ...
ductilimeternoun(n.) An instrument for accurately determining the ductility of metals. ductilitynoun(n.) The property of a metal which allows it to be drawn into wires or filaments. noun(n.) Tractableness; pliableness. ductionnoun(n.) Guidance. ...
production of nicad (nickel-cadmium), or rechargeable, batteries. It is also used in pigments, coatings and plating, manufacture of plastic products, and alloys. An alloy is made by melting and mixing two or more metals. The mixture has properties different from those of the individual metals...