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energy
(Encyclopedia) CE5 Relations between potential energy (PE) and kinetic energy (KE) for a swinging pendulum energy, in physics, the ability or capacity to do work or to produce change. Forms of energy include hea...Arab Spring
(Encyclopedia)Arab Spring, in modern North African and Middle Eastern history, antigovernment demonstrations and uprisings that, from late 2010, swept many of the regions' Arab nations. Arising in large part in rea...mosque
(Encyclopedia)mosque mŏsk [key], building for worship used by members of the Islamic faith. Muhammad's house in Medina (a.d. 622), with its surrounding courtyard and hall with columns, became the prototype for the...Mussolini, Benito
(Encyclopedia)Mussolini, Benito bānēˈtō mo͞os-sōlēˈnē [key], 1883–1945, Italian dictator and leader of the Fascist movement. Mussolini was at first cool to Adolf Hitler and opposed his designs on Aus...Freemasonry
(Encyclopedia)Freemasonry, teachings and practices of the secret fraternal order officially known as the Free and Accepted Masons, or Ancient Free and Accepted Masons. Because of its identification with 19th-cent...Roman architecture
(Encyclopedia)Roman architecture, structures produced by the ancient Romans. Most important among the structures developed by the Romans themselves were basilicas, baths, amphitheaters, and triumphal arches. U...Saint Petersburg, city, Russia
(Encyclopedia)Saint Petersburg, formerly Leningrad, Rus. Sankt-Peterburg, city (1990 est. pop. 5,036,000), capital of the Leningrad region (although not administratively part of it) and the administrative center of...Shanghai
(Encyclopedia)Shanghai shăngˈhīˈ, shängˈhīˈ [key], city and municipality (2010 pop. 23,019,148), in, but independent of, Jiangsu prov., E China, on the Huangpu (Whangpoo) River where it flows into the Chang...Baltimore
(Encyclopedia)Baltimore, city (2020 pop. 575,584), N central Md., surrounded by but politically independent of Baltimore co., on the Patapsco River estuary, an arm of...gravitation
(Encyclopedia)gravitation, the attractive force existing between any two particles of matter. The term gravitygravity is commonly used synonymously with gravitation, but in correct usage a definite distinction is...Browse by Subject
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