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physics

(Encyclopedia)physics, branch of science traditionally defined as the study of matter, energy, and the relation between them; it was called natural philosophy until the late 19th cent. and is still known by this na...

Australia

(Encyclopedia)CE5 Australia ôstrālˈyə [key], smallest continent, between the Indian and Pacific oceans. With the island state of Tasmania to the south, the continent makes up th...

papacy

(Encyclopedia)CE5 papacy pāˈpəsē [key], office of the pope, head of the Roman Catholic Church. He is pope by reason of being bishop of Rome and thus, according to Roman Catholic belief, successor in the see ...

history

(Encyclopedia)history, in its broadest sense, is the story of humanity's past. It also refers to the recording of that past. The diverse sources of history include books, newspapers, printed documents, personal pap...

mathematics

(Encyclopedia)mathematics, deductive study of numbers, geometry, and various abstract constructs, or structures; the latter often “abstract” the features common to several models derived from the empirical, or ...

photography, still

(Encyclopedia)photography, still, science and art of making permanent images on light-sensitive materials. See also photographic processing; motion picture photography; motion pictures. By the end of ...

American Revolution

(Encyclopedia)American Revolution, 1775–83, struggle by which the Thirteen Colonies on the Atlantic seaboard of North America won independence from Great Britain and became the United States. It is also called th...

science

(Encyclopedia)science [Lat. scientia=knowledge]. For many the term science refers to the organized body of knowledge concerning the physical world, both animate and inanimate, but a proper definition would also hav...

Poland

(Encyclopedia)CE5 Poland, Pol. Polska, officially Republic of Poland, republic (2015 est. pop. 38,265,000), 120,725 sq mi (312,677 sq km), central Europe. It borders on Germany in the west, on the Baltic Sea and...

American literature

(Encyclopedia)American literature, literature in English produced in what is now the United States of America. The years immediately after World War I brought a highly vocal rebellion against established socia...