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Kopp, Hermann Franz Moritz
(Encyclopedia)Kopp, Hermann Franz Moritz hĕrˈmän fräntz mōˈrĭts kôp [key], 1817–92, German physical chemist and historian of chemistry. His research concerned the connection between the physical propertie...celluloid
(Encyclopedia)celluloid [from cellulose], transparent, colorless synthetic plastic made by treating cellulose nitrate with camphor and alcohol. Celluloid was the first important synthetic plastic and was widely use...hydrate
(Encyclopedia)hydrate hīˈdrāt [key], chemical compound that contains water. A common hydrate is the familiar blue vitriol, a crystalline form of cupric sulfate. Chemically, it is cupric sulfate pentahydrate, CuS...liquid crystal
(Encyclopedia)liquid crystal, liquid whose component particles, atoms or molecules, tend to arrange themselves with a degree of order far exceeding that found in ordinary liquids and approaching that of solid cryst...europium
(Encyclopedia)europium yo͝orōˈpēəm [key] [from Europe], metallic chemical element; symbol Eu; at. no. 63; at. wt. 151.964; m.p. about 820℃; b.p. about 1,600℃; sp. gr. 5.25 at 25℃; valence +2 or +3. Europ...naphthol
(Encyclopedia) CE5 naphthol năfˈthôl [key], C10H7OH, either of two crystalline monohydric alcohols. The naphthols are position isomers, differing in the location of the hydroxyl group, –OH, on the carbon ske...laser printer
(Encyclopedia)laser printer, a computer printer that produces high-resolution output by means of a process that is similar to photocopying. In place of reflected light from an image (as is used in xerography), a la...Culver City
(Encyclopedia)Culver City, city (2020 pop. 40,779), Los Angeles co., S Calif., a residential suburb of Los Angeles; inc. 1917. Culver City's chief manufactures are ru...Fort Lee
(Encyclopedia)Fort Lee, residential borough (2020 pop. 40,223), Bergen co., NE N.J., on the Palisades overlooking the Hudson River; settled c.1700, inc. 1904. The Rev...Hyatt, John Wesley
(Encyclopedia)Hyatt, John Wesley, 1837–1920, American inventor, b. Starkey, N.Y. He is known especially for his development of celluloid; with his brothers, he began its manufacture in 1872. He also invented the ...Browse by Subject
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