The Encyclopedia Americana, Volumen10Grolier, 1988 |
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Página 188
... material to be deposited are placed in a high - vacuum chamber . The material is heated until it vaporizes , forming a cloud throughout the chamber . Part of the cloud con- denses on the substrates , coating them with a film of the ...
... material to be deposited are placed in a high - vacuum chamber . The material is heated until it vaporizes , forming a cloud throughout the chamber . Part of the cloud con- denses on the substrates , coating them with a film of the ...
Página 272
... material , such as wall- paper or cloth , are usually embossed between two rollers . Noncontinuous material , such as leather , is embossed between a steel plate and a plate of a more yielding substance , such as com- pressed paper ...
... material , such as wall- paper or cloth , are usually embossed between two rollers . Noncontinuous material , such as leather , is embossed between a steel plate and a plate of a more yielding substance , such as com- pressed paper ...
Página 633
... material for many other organic substances . Most industrial ethyl alcohol is denatured - that is , substances are added to it that render it unfit for drinking , and these substances cannot be readily removed . Denatured alcohol is not ...
... material for many other organic substances . Most industrial ethyl alcohol is denatured - that is , substances are added to it that render it unfit for drinking , and these substances cannot be readily removed . Denatured alcohol is not ...
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18th century 18th dynasty American amperes ancient Ancient Egypt Arab army atoms became blastomeres blastopore blastula body British called cathode cells central Charles circuit device dynasty early East economic ectoderm Egypt Egyptian Eisenhower El Salvador elec electric charge electric current electric field electromagnetic electrons elements elephants Elizabeth embroidery embryo embryology emotion Emperor empire enamel endoderm energy England Europe European force France French fuse German grounding conductor History important India Islamic king Kingdom known land later layer light magnetic field major ment mesoderm metal meters military Muslim negative North organs p-n junction party period plate political population president Press produced radiation Ramses III reform region reign reprint result Salvador semiconductor surface temple theory tion tomb trade transistor tube United Univ University voltage volts vote wave western wire