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Newlands, John Alexander Reina

(Encyclopedia)Newlands, John Alexander Reina, 1838–98, British chemist. He studied at the Royal College of Chemistry in London and worked as an industrial chemist. Newlands prepared the first periodic table of el...

Priscian

(Encyclopedia)Priscian (Priscianus Caesariensis) prĭshˈən [key], fl. 500, Latin grammarian, b. Caesarea in Mauretania. Priscian taught grammar at Constantinople. His Commentarii grammatici, in 18 books, was long...

National Parks and Monuments (table)

(Encyclopedia)National Parks and Monuments 1 National Parks and Monuments National Monuments National and International Historic Sites and Historical Parks National Memorials National Battlef...

candle, unit of luminous intensity

(Encyclopedia)candle, in weights and measures, unit of luminous intensity; it is defined as 1⁄60 of the intensity of a blackbody, or ideal radiator, at the temperature at which platinum solidifies (2,046K). The...

Guillaume, Charles Édouard

(Encyclopedia)Guillaume, Charles Édouard shärl ādwärˈ gēyōmˈ [key], 1861–1938, Swiss physicist and metrologist, Ph.D. Zürich Polytechnic (now the Federal Institute of Technology), 1882. Guillaume joined ...

metric system

(Encyclopedia)CE5 metric system, system of weights and measures planned in France and adopted there in 1799; it has since been adopted by most of the technologically developed countries of the world. It is based...

Saint-Cloud

(Encyclopedia)Saint-Cloud săN-klo͞oˈ [key], town (1990 est. pop. 28,673), Hauts-de-Seine dept., N central France, a suburb W of Paris on the Seine River. It is a residential town and resort, with a famous racetr...

molecular weight

(Encyclopedia)molecular weight, weight of a molecule of a substance expressed in atomic mass units (amu). The molecular weight may be calculated from the molecular formula of the substance; it is the sum of the ato...

atomic weight

(Encyclopedia)atomic weight, mean (weighted average) of the masses of all the naturally occurring isotopes of a chemical element, as contrasted with atomic mass, which is the mass of any individual isotope. Althoug...

Troyes

(Encyclopedia)Troyes trwä [key], city (1990 pop. 60,755), capital of Aube dept., NE France, on the Seine River. It is an industrial town. Hosiery is the main product. Troyes became an episcopal see in the 4th cent...