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weather satellite

(Encyclopedia)weather satellite, artificial satellite used to gather data on a global basis for improvement of weather forecasting. Information includes cloud cover, storm location, temperature, and heat balance in...

condensation

(Encyclopedia)condensation, in physics, change of a substance from the gaseous (vapor) to the liquid state (see states of matter). Condensation is the reverse of vaporization, or change from liquid to gas. It can b...

anticyclone

(Encyclopedia)anticyclone, region of high atmospheric pressure; anticyclones are commonly referred to as “highs.” The pressure gradient, or change between the core of the anticyclone and its surroundings, combi...

Atget, Eugène

(Encyclopedia)Atget, Eugène özhĕnˈ ätzhĕˈ [key], 1857–1927, French photographer. After working as a sailor and then as an actor for many years, Atget became a photographer at the age of 42. He began at onc...

Ligeti, György

(Encyclopedia)Ligeti, György, 1923–2006, Hungarian composer. He studied music in Romania and Hungary, and was a teacher at the Budapest Academy of Music until he fled to Vienna (1956) after the Soviet invasion o...

herbarium

(Encyclopedia)herbarium, collection of dried and mounted plant specimens used in systematic botany. To preserve their form and color, plants collected in the field are spread flat in sheets of newsprint and dried, ...

species

(Encyclopedia)species, in biology, a category of classification, the original and still the basic unit in the demarcation of plant and animal types. The species marks the boundary between populations of organisms r...

land tax

(Encyclopedia)land tax, impost levied upon real property. It is sometimes called a real estate tax, especially when assessed against both improved and unimproved land. Probably the earliest direct tax and formerly ...

Ascension, island

(Encyclopedia)Ascension əsĕnˈchən [key], island, 34 sq mi (88 sq km), in the S Atlantic, NW of Saint Helena and belonging to the British St. Helena overseas territory. Georgetown i...