Columbia Encyclopedia
Search results
500 results found
Snell, Willebrord
(Encyclopedia)Snell or Snellius, Willebrord vĭlˈəbrôrt snĕl, snĕlēəs [key], 1591–1626, Dutch mathematician. He is generally credited with the discovery (1621) of the law of the refraction of light. In 161...Batavia, city, United States
(Encyclopedia)Batavia bətāˈvēə [key], city (2020 pop. 15,600), seat of Genesee co., W N.Y.; inc. 1915. It ...San Bruno
(Encyclopedia)San Bruno săn bro͞oˈnō [key], city (1990 pop. 38,961), San Mateo co., W Calif., a suburb on San Francisco Bay; inc. 1914. There is light manufacturing and petroleum refining. The Golden Gate Natio...Red Poll cattle
(Encyclopedia)Red Poll cattle pōl [key], breed of polled (hornless) cattle, originated in England c.1846. They are a medium-sized, hardy breed of cattle, light red to very dark red in color, and are raised for bot...pigmentation
(Encyclopedia)pigmentation, name for the coloring matter found in certain plant and animal cells and for the color produced thereby. Pigmentation occurs in nearly all living organisms. Almost all plants synthesize ...stellar structure
(Encyclopedia)stellar structure, physical properties of a star and the processes taking place within it. Except for that of the sun, astronomers must draw their conclusions regarding stellar structure on the basis ...Cuneo
(Encyclopedia)Cuneo ko͞oˈnāō [key], city, capital of Cuneo prov., Piedmont, NW Italy, on the Stura Rive...Cortland
(Encyclopedia)Cortland kôrtˈlənd [key], city (2020 pop. 18,696), seat of Cortland co., central N.Y.; set...Geissler tube
(Encyclopedia)Geissler tube gīsˈlər [key], gas discharge tube in which light is produced when an electric discharge passes through the rarefied gas in the tube. The color of the glow depends on the gas used. The...Fort Madison
(Encyclopedia)Fort Madison, city (2020 pop. 10,270), seat of Lee co., SE Iowa, on the Mississippi River; inc. 1838. Fort Madison, a U.S. trading post, was established...Browse by Subject
- Earth and the Environment +-
- History +-
- Literature and the Arts +-
- Medicine +-
- People +-
- Philosophy and Religion +-
-
Places
+-
- Africa
- Asia
- Australia and Oceania
- Britain, Ireland, France, and the Low Countries
- Commonwealth of Independent States and the Baltic Nations
- Germany, Scandinavia, and Central Europe
- Latin America and the Caribbean
- Oceans, Continents, and Polar Regions
- Spain, Portugal, Italy, Greece, and the Balkans
- United States, Canada, and Greenland
- Plants and Animals +-
- Science and Technology +-
- Social Sciences and the Law +-
- Sports and Everyday Life +-
