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echo sounder
(Encyclopedia) echo sounder, an older instrumentation system for indirectly determining ocean floor depth. Echo sounding is based on the principle that water is an excellent medium for the…Domesday Book
(Encyclopedia) Domesday BookDomesday Bookd&oomacr;mzˈdā [key], record of a general census of England made (1085–86) by order of William I (William the Conqueror). The survey ascertained the…draft, in banking
(Encyclopedia) draft, in banking, order by one party to another party to pay a stated sum to the person or firm in whose favor the draft is made. It is similar in form to the ordinary bank check.…antibody
(Encyclopedia) antibody, protein produced by the immune system (see immunity) in response to the presence in the body of antigens: foreign proteins or polysaccharides such as bacteria, bacterial…Hope, Bob
(Encyclopedia) Hope, Bob, 1903–2003, American comedian, b. London as Leslie Townes Hope; he came to the United States at the age of five. Famous for his “ski-jump” nose, topical humor, superb timing…Habré, Hissène
(Encyclopedia) Habré, HissèneHabré, Hissènehēsĕnˈ häbrāˈ [key], 1942–, Chadian political leader, president of Chad (1982–90). He studied political science in Paris during the late 1960s and,…quietism
(Encyclopedia) quietism, a heretical form of religious mysticism founded by Miguel de Molinos, a 17th-century Spanish priest. Molinism, or quietism, developed within the Roman Catholic Church in…Riefenstahl, Leni
(Encyclopedia) Riefenstahl, Leni (Berta Helene Amalie Riefenstahl)Riefenstahl, Lenilāˈnē rēˈfənshtälˌ, bĕrˈtə hālāˈnə ämälˈyə [key], 1902–2003, German filmmaker, b. Berlin. First a dancer, then an…ballistics
(Encyclopedia) ballisticsballisticsbəlĭsˈtĭks [key], science of projectiles. Interior ballistics deals with the propulsion and the motion of a projectile within a gun or firing device. Its problems…rationalism
(Encyclopedia) rationalism [Lat.,=belonging to reason], in philosophy, a theory that holds that reason alone, unaided by experience, can arrive at basic truth regarding the world. Associated with…